# Go Math Grade 1 Answer Key Chapter 9 Measurement

## Go Math Grade 1 Chapter 9 Answer Key Measurement

### Measurement Show What You Know

Bigger and Smaller
Circle the bigger object.
Question 1.

Circle the smaller object.
Question 2.

Compare Length
Circle the longer object.
Draw a line under the shorter object.
Question 3.

Explanation :
Th shorter object is represented with a line under it

Question 4.

Explanation :
Th shorter object is represented with a line under it

Numbers 1 to 10
Write each number in order to 10.
Question 5.

Explanation :
A word or symbol that represents a specific amount or quantity.
The natural numbers starts from 1 , 2 , 3 , 4 …………. and so on .

### Measurement Vocabulary Builder

Visualize It
Sort the review words from the box.

Explanation :
The length measures start from shorter, short , long and longer. We use long to describeÂ aÂ measureÂ ofÂ length. when we see an object of more length than the long object we say it as longer or longest object. similar way
when we see an object of less length than the short object we say it as shorter or shortest object.
numbers are sorted in ascending order from smaller to bigger.

Understand Vocabulary
Complete the sentences with the correct word.
Question 1.
A crayon is ______ than a marker.
A crayon is shorter than a marker.
Explanation:
The length of the crayon is shorter when compared to marker based the lengths they are compared as longer or shorter.

Question 2.
A toothbrush is _____ than a paper clip.
A toothbrush is longer than a paper clip.
Explanation :
A toothbrush is longer when compared to a paper clip based the lengths they are compared as longer or shorter.

Write the name below the number
Question 3.

### Measurement Game Measure UP!

Materials

Play with a partner.

1. Put on START.
2. Spin the . Move your that many spaces. Take that object.
3. Your partner spins, moves, and takes that object.
4. Compare the lengths of the two objects.
5. The player with the longer object places a on the space. If both objects are the same length, both players put a on the board.
6. Keep playing until one person gets to END. The player with the most wins.

### Measurement Vocabulary Game

Going to a Weather Station

Materials

How to Play

1. Each player puts a on START.
2. Toss the to take a turn. Move your that many spaces.
3. Follow these directions for the space where you land.
White Space Read the math word or symbol. Tell its meaning. If you are correct, jump ahead to the next space with the same term.
Green Space Follow the directions. If there are no directions, stay where you are.
4. The first player to reach FINISH wins.

Materials

How to Play

1. Put your on START.
2. Toss the and move your that many spaces.
3. If you land on one of these spaces: Blue Space Explain the math word or use it in a sentence. If your answer is correct, jump ahead to the next space with that word. Green Space Follow the directions in the space. If there are no directions, donâ€™t move.
4. The first player to reach FINISH wins.

The Write Way
Reflect
Choose one idea. Draw and write about it.

• Julia has to measure an object. She does not have a ruler. Tell what Julia could do to solve her problem.
• Explain why it is important to learn how to tell time.

### Lesson 9.1 Order Length

Essential Question How do you order objects by length?

Listen and Draw

Use objects to show the problem.
Draw to show your work.

MATHEMATICAL PRACTICES
Compare the straw and the key. Which is longer? Which is shorter?

Model and Draw

Order three pieces of yarn from shortest to longest. Draw the missing piece of yarn.

Explanation:
The First Yarn is shortest and the Third Yarn is longest . So, the Second yarn should not be shortest nor longest so draw a line which is longer that shortest Yarn and shorter than the longest Yarn .

Share and Show

Draw three lines in order from shortest to longest.

Explanation :
The First line is shortest line and the Third line is longest line. So, the Second line should not be shortest nor longest so draw a line which is longer that shortest line and shorter than the longest line .

Draw three lines in order from longest to shortest.

Explanation :
The Fourth line is Longest line and the Sixth line is Shortest line. So, the Fifth line should not be shortest nor longest so draw a line which is longer that shortest line and shorter than the longest line .

MATHEMATICAL PRACTICE

Compare Representations
Draw three crayons in order from shortest to longest.

Explanation :
The Seventh line is shortest line and the Ninth line is longest line. So, the Eighth line should not be shortest nor longest so draw a line which is longer that shortest line and shorter than the longest line .

Draw three crayons in order from longest to shortest.

Explanation :
The Tenth line is Longest line and the Twelveth line is Shortest line. So, the Eleventh line should not be shortest nor longest so draw a line which is longer that shortest line and shorter than the longest line .

Question 13.
THINK SMARTER
Complete each sentence.

The Blue Yarn is the shortest yarn .
The Green Yarn and Red Yarn are the same length .

Problem Solving â€¢ Applications

Solve.
Question 14.
GO DEEPER
Draw four objects in order from shortest to longest.

Question 15.
THINK SMARTER
The string is shorter than the ribbon. The chain is shorter than the ribbon. Circle the longest object.

Explanation :
String is shorter than Ribbon
Chain is shorter than Ribbon
That means both string and chain are shorter than Ribbon so, Ribbon is longest object .

Question 16.
THINK SMARTER
Match each word on the left to a drawing on the right.

TAKE HOME ACTIVITY â€¢ Show your child three different lengths of objects, such as three pencils or spoons. Ask him or her to order the objects from shortest to longest.

### Order Length Homework & Practice 9.1

Draw three markers in order from longest to shortest.

Explanation :
The First Marker is Longest Marker and the Third Marker is Shortest Marker . So, the Second Marker should not be shortest nor longest so draw a Marker which is longer that shortest Marker and shorter than the longest Marker .

Problem Solving
Solve
Question 4.
Fred has the shortest toothbrush in the bathroom. Circle Fredâ€™s toothbrush.

Explanation :
The First Brush is Longest Brush and the Third Brush is Shortest Brush . So, the Second Brush is shortest nor longest .

Question 5.
WRITE
Draw three different lines in order from shortest to longest. Label the shortest line and the longest line.

Explanation :
The First Line is ShortestÂ  and the Third Line is the Longest . So, the Second Line is shortest nor longest .

Lesson Check
Question 1.
Draw three crayons in order from longest to shortest.

Explanation :
The First Crayon is Longest Crayon and the Third CrayonÂ  is Shortest Crayon . So, the Second Crayon should not be shortest nor longest so draw a Crayon which is longer that shortest Crayon and shorter than the longest Crayon .

Question 2.
Draw three paint brushes in order from shortest to longest.

Explanation :
The First Brush is shortest Brush and the Third Brush is longest Brush . So, the Second Brush should not be shortest nor longest so draw a Brush which is longer that shortest Brush and shorter than the longest Brush .

Spiral Review
Question 3.
Use to show 22 two different ways. Draw both ways.

### Lesson 9.2 Indirect Measurement

Essential Question How can you compare lengths of three objects to put them in order?

Listen and Draw

Clue 1: A yellow string is shorter than a blue string.
Clue 2: The blue string is shorter than a red string.
Clue 3: The yellow string is shorter than the red string.

MATHEMATICAL PRACTICES
Represent How did the clues help you draw the strings in the correct order?

Explanation :
From Clue 1 and Clue 3 we know that Yellow string is shorter than blue and red string . that means Yellow string is the shortest strings. From Clue 2 Blue string is shorter than red string that means red string is the longest string.

Share and Show

Use the clues. Write shorter or longer to complete the sentence. Then draw to prove your answer.
Question 1.
Clue 1: A red line is shorter than a blue line.
Clue 2: The blue line is shorter than a purple line.
So, the red line is _______ than the purple line.

Explanation :
Clue 1: A red line is shorter than a blue line.
Clue 2: The blue line is shorter than a purple line.
If both red and blue lines are shorter then purple line will be longest line.
So, the red line is shorter than the purple line.

MATHEMATICAL PRACTICE
Analyze Relationships Use the clues. Write shorter or longer to complete the sentence. Then draw to prove your answer.
Question 2.
Clue 1: A green line is shorter than a pink line.
Clue 2: The pink line is shorter than a blue line.
So, the green line is ______ than the blue line.

Explanation :
Clue 1: A green line is shorter than a pink line.
Clue 2: The pink line is shorter than a blue line.
green line < pink line < blue line then blue line will be longest line
So, the green line is shorter than the blue line.

Question 3.
Clue 1: An orange line is longer than a yellow line.
Clue 2: The yellow line is longer than a red line.
So, the orange line is ______ than the red line.

Explanation :
Clue 1: An orange line is longer than a yellow line.
Clue 2: The yellow line is longer than a red line.
orange line > yellow line > red line that means orange line is the longest line .
So, the orange line is longer than the red line.

Problem Solving â€¢ Applications

Question 4.
THINK SMARTER
The ribbon is longer than the yarn. The yarn is longer than the string. The yarn and the pencil are the same length. Draw the lengths of the objects next to their labels.

Explanation :
RibbonÂ  > Yarn >String
Yarn = Pencil
So, Ribon is longest

Question 5.
THINK SMARTER
Is the first line longer than the second line? Choose Yes or No.

Explanation :
Both first two figures first lines are longer than second line, Where as in third figure the first line is shorter than the first line .

TAKE HOME ACTIVITY â€¢ Show your child the length of one object. Then show your child an object that is longer and an object that is shorter than the first object.

### Indirect Measurement Homework & Practice 9.2

Read the clues. Write shorter or longer to complete the sentence. Then draw to prove your answer.
Question 1.
Clue 1: A yarn is longer than a ribbon.
Clue 2: The ribbon is longer than a crayon.
So, the yarn is _______ than the crayon.

Explanation :
Clue 1: A yarn is longer than a ribbon.
Clue 2: The ribbon is longer than a crayon.
Yarn > Ribbon > Crayon that means Yarn is longest
So, the yarn is longer than the crayon.

Problem Solving
Solve. Draw or write to explain.
Question 2.
Meganâ€™s pencil is shorter than Tashaâ€™s pencil. Tashaâ€™s pencil is shorter than Kimâ€™s pencil. Is Meganâ€™s pencil shorter or longer than Kimâ€™s pencil?
________
aqSA`
Explanation :
Megan’s pencil < Tasha’s pencil < Kim’s pencil
Kim’s pencil is the longest pencil
Megan’s pencil is shorter than Kim’s pencil

Question 3.
WRITE
Use different colors to draw 3 lines that are different lengths. Then write 3 sentences comparing their lengths.

Explanation :
Clue 1: A yellow string is longer than a red string.
Clue 2: The orange string is longer than a yellow string.
Clue 3: The red string is shorter than the orange string.

Lesson Check
Question 1.
A black line is longer than a gray line. The gray line is longer than a white line. Is the black line shorter or longer than the white line? Draw to prove your answer.
_________

Explanation :
Black line > Gray line >White line
Black line is the longest line .
So, black line is longer than white line .

Spiral Review
Question 2.
What is the sum? Write the number.
42 + 20 = _____
42 + 20 = 62
Explanation :
When addend 20 is added to addend 42 we get the sum of 62 .

### Lesson 9.3 Use Nonstandard Units to Measure Length

Essential Question How do you measure length using nonstandard units?

Listen and Draw

Use . Draw to show the problem.

MATHEMATICAL PRACTICES
Reasoning How do you draw the boat to be the right length?

Model and Draw

You can use to measure length. Write how many.

Explanation
For first figure 19.5 are used and for second figure 7.5 are used .

Share and Show

Use real objects. Use to measure.
Question 1.

Explanation :
To measure pencil we require 2 square object .

Question 2.

Explanation :
To Measure stapler we require 3 square object .

Question 3.

Explanation :
To Measure paint brush we require 3 square object .

Question 4.

Explanation :
To Measure scissor we require 2 square object .

Use real objects. Use to measure.
Question 5.

Explanation :
To Measure the given figure we require 2 square object .

Question 6.

Explanation :
To Measure the Glue bottle we require 2 square object .

Question 7.

Explanation :
To Measure the given figure we require 2 square object .

Question 8.

Explanation :
To Measure the Pencil we require 4 square object .

Question 9.
THINK SMARTER
The green yarn is about 2 long. About how long is the blue yarn?

Explanation :
The Green Yarn is 2 long where as , The Blue Yarn is 6 long . as shown in above figure.

Problem Solving â€¢ Applications

MATHEMATICAL PRACTICE Evaluate Reasonableness Solve.
Question 10.
Mark measures a real glue stick with . About how long is a glue stick? Circle the answer that is most reasonable.

Explanation :
To Measure glue stick we requires 4 .

Question 11.
GO DEEPER
Bo has 4 ribbons. Circle the ribbon that is less than 3 Â long but more than 1 long.

Explanation :
The ribbon that is less than 3 Â long but more than 1 long means 2
Only the yellow ribbon have 2 .
So, it is circledÂ  .

Question 12.
THINK SMARTER+
The crayon is about 4 tiles long. Draw tiles below the crayon to show its length.

Explanation :
To Measure Crayon we require 4 titles.

TAKE HOME ACTIVITY â€¢ Give your child paper clips or other small objects that are the same length. Have him or her estimate the lengths of objects around the house and then measure to check.

### Use Nonstandard Units to Measure Length Homework & Practice 9.3

Use real objects. Use to measure.
Question 1.

Explanation :
To measure Math book we require 2

Question 2.

Explanation :
To measure marker we require 4

Question 3.

Explanation :
To measure crayon we require 2

Problem Solving
Solve.
Question 4.
Don measures his desk with . About how long is his desk?

Explanation :
To measure Table we require 4

Question 5.
WRITE
Use words or
pictures to explain how to measure an index card using color tiles.

Explanation :
To measure Index card we require 4

Lesson Check
Question 1.
Use . Kevin measures the ribbon with . About how long is the ribbon?

Explanation :
The length of ribbon is about 4 .

Spiral Review
Question 2.
Draw and write to solve. I have 27 red flowers and 19 white flowers. How many flowers do I have?
______ flowers

Explanation :
Number of red flowers = 27
Number of white flowers = 19
Total Number of flowers = 27 + 19 = 46

Question 3.
Circle the number that is less.
51 50

Did tens or ones help you decide?
tens ones

Write the numbers.
______ is less than ____
_____< _____
50 is less than 51
50 < 51

Explanation :
TheÂ  51Â  and 50 are two digit numbers. first check the ten’s place both the numbers have 5 in the ten’s place. later check digit in the one’s place. the first number have 1 in one’s and second number have 0 in the one’s place. so 1 is greater than 0 so, 51 is greater than 50 .

### Lesson 9.4 Make a Nonstandard Measuring Tool

Essential Question How do you use a nonstandard measuring tool to measure length?
Standard units are common units of measurement such asÂ centimetres,Â gramsÂ andÂ litres. Non-standard measurement units might includeÂ cups,Â cubes or sweets.
For example: a child might be asked toÂ measureÂ theÂ lengthÂ of their tableÂ usingÂ their hand span. They would then record how many hand spans the table was and record this. They might then be asked toÂ measureÂ theÂ lengthÂ of a book.

Listen and Draw

Circle the name of the child who measured correctly.

MATHEMATICAL PRACTICES
Use Tools Explain how you know who measured correctly.

Explanation :
Mateo measures the pencil correctly.
The first paper clip should place from where the measuring starts then, place the second paper clip where the first paper clip ends and so on until the pencil is measured .

Model and Draw

Make your own paper clip measuring tool like the one on the shelf. Measure the length of a door. About how long is the door?

Explanation :
To measure the door we require about 3 paper clips.

Share and Show

Use real objects and the measuring tool you made. Measure. Circle the longest object. Underline the shortest object.
Question 1.

ExplanationÂ  :
To measure the notice board we require about 2 paper clips.

Question 2.

Explanation :
To Measure the above given figure we require about 1 paper clip .

Question 3.

Explanation:
To measure the board we require 2 safety clip

Question 4.

Explanation :
To measure given window we require about 1 paper clip .

MATHEMATICAL PRACTICE Use Appropriate Tools Use the measuring tool you made. Measure real objects.
Question 5.

Explanation :
To measure given figure we require about 1 paper clip .

Question 6.

Explanation :
To measure given figure we require about 1 paper clip .

Question 7.

Question 8.

Question 9.
GO DEEPER
Cody measured his real lunch box. It is about 10 long. About how long is Codyâ€™s real pencil?

Problem Solving â€¢ Applications

Solve
Question 10.
THINK SMARTER
Lisa tried to measure the pencil. She thinks the pencil is 5 paper clips long. About how long is the pencil?

Explanation :
Lisa measured the pencil in a wrong way. The correct measuring of the pencil is shown in the above figure.
To measure the pencil we require about 4 paper clips .

Question 11.
THINK SMARTER
Use the below. About how long is the paintbrush?

Explanation :
The Marking of the paint brush is shown in the above figure to measure how long is the paint brush.
We require about 4 paper clips to measure it .

TAKE HOME ACTIVITY â€¢ Have your child measure different objects around the house using a paper clip measuring tool.

### Make a Nonstandard Measuring Tool Homework & Practice 9.4

Use the measuring tool you made. Measure real objects.
Question 1.

Explanation:
To Measure the computer we require about 1 paper clip .

Question 2.

Explanation:
To Measure the table we require about 1 paper clip .

Question 3.

Explanation:
To Measure the door we require about 1 paper clip .

Question 4.

Explanation:
To Measure the Math we require about 1 paper clip .

Question 5.

Explanation:
To Measure the computer we require about 1 paper clip .

Question 6.

Explanation:
To Measure the given figure we require about 1 paper clip .

Question 7.
WRITE
Use words or pictures to explain how to measure a table using a paper clip measuring tool.

Explanation:
To Measure the table we require about 1 paper clip .

Lesson Check
Question 1.
Use the below. Circle the string that is about 4 long.

Explanation :
The paper clips length is marked with lines that lines length matches the length of string 3 . so, string 3 is about 4 long .

Spiral Review
Question 2.
Ty crosses out the number cards that are greater than 38 and less than 34. What numbers are left?

______ and ______
35 and 37 are left .

Explanation :
Number greater than 38Â  are 39 and 40
Number lesser than 34 are 33
Numbers which are left 35 and 37

Question 3.
There are 12 books. 4 books are large. The rest are small. Write a number sentence that shows how to find the number of small books.
______ – ______ = ______
Number of books = 12
Number of large books = 4
Number of small books = 12 – 4 = 8 books

### Lesson 9.5 Problem Solving â€¢ Measure and Compare

Essential Question How can acting it out help you solve measurement problems?

The blue ribbon is about 4 long. The red ribbon is 1 long. The green ribbon is 2 longer than the red ribbon. Measure and draw the ribbons in order from shortest to longest.

Show how to solve the problem.

Explanation :
Blue Ribbon is about 4 long
Red ribbon is 1 long
The green ribbon is 2 longer than the red ribbon
Green Ribbon = 2 + 1 = 3Â long
So, Blue ribbon is longest ribbon.
Blue > green > red ribbons.

HOME CONNECTION â€¢ Have your child act out a measurement problem by finding the lengths of 3 objects and ordering them from shortest to longest.

Try Another Problem

Zack has 3 ribbons. The yellow ribbon is about 4 long. The orange ribbon is 3 shorter than the yellow ribbon. The blue ribbon is 2 longer than the yellow ribbon.
Measure and draw the ribbons in order from longest to shortest.
Question 1.

Explanations :
Number of ribbons = 3
Yellow ribbon is about 4 long.
Orange ribbon is 3 shorter than the yellow ribbon.
Orange ribbon = 4 – 3 = 1 long.
Blue ribbon is 2 longer than the yellow ribbon.
Blue ribbon = 4 + 2 = 6 long.
blue ribbon is the longest ribbon
Blue > Yellow > Orange .

Question 2.

Question 3.

MATHEMATICAL PRACTICES
Compare How many paper clips shorter is the orange ribbon than the blue ribbon?
Blue ribbon is about 6 long
Orange is about 1 long
Orange Ribbon is less than Blue Ribbon = 6 – 1 = 5
5 shorter is the orange ribbon than the blue ribbon.

Share and Show

Solve. Draw or write to explain.
Question 4.
GO DEEPER
Lisa measures her shoe to be about 5 long. Measure and draw an object that is 3 shorter than her shoe. Measure and draw an object that is 2 longer than her shoe.

Explanation :
Lisa shoe measure to be = 5 long
An object 1 that is 3 shorter than her shoe.
Object 1 = 5 – 3 = 2
An object 2 that is 2 longer than her shoe.
Object 2 = 5 + 2 = 7

Question 5.
THINK SMARTER+
Noah measures a marker to be about 4 long and a pencil to be about 6 long. Draw an object that is 1 longer than the marker and 1 shorter than the pencil.

TAKE HOME ACTIVITY â€¢ Have your child explain how he or she solved Exercise 4.

### Problem Solving â€¢ Measure and Compare Homework & Practice 9.5

The blue string is about 3 long. The green string is 2 longer than the blue string. The red string is 1 shorter than the blue string. Measure and draw the strings in order from longest to shortest.
The blue string is about 3 long.
The green string is 2 longer than the blue string.
Green string = 3 + 2 = 5 long
The red string is 1 shorter than the blue string.
Red string = 3 – 1 = 2 long
Green >Blue > Red string

Question 1.

Question 2.

Question 3.

Problem Solving
Question 4.
Sandy has a ribbon about 4 long. She cut a new ribbon 2 longer. Measure and draw the two ribbons.

The new ribbon is about ______ long.

Explanation :
Sandy has a ribbon about 4 long.
New ribbon 2 longer.
New ribbon = 4 + 2 = 6Â  long .

Question 5.
WRITE
Measure and draw to show a blue crayon and a green crayon that is about 1 paper clip longer.

Explanation :
draw to show a blue crayon and a green crayon that is about 1 paper clip longer.

Lesson Check
Question 1.
Mia measures a stapler with her paper clip ruler. About how long is the stapler?

Explanation :
The measurement of the stapler is marked in the above image . so, the stapler is about 7 paper clips.

Spiral Review
Question 2.
What is the unknown number? Write the number.
4 + _____ = 13
4 + ______ = 13
_______ = 13 – 4 = 9
So, the Unknown Number is 9

Question 3.
Count by tens. What numbers are missing? Write the numbers.
17, 27, ____, ____, 57, 67
Count by tens :
17 , 27 , 37 , 47 , 57 , 67
Explanation :
Count by tens means the every ten’s digit is increased by 1 from the previous ten’s value of the Number .

### Measurement Mid-Chapter Checkpoint

Concepts and Skills

Draw three crayons in order from shortest to longest.
Question 1.

Explanation :
Longest crayon is the Yellow crayon and the shortest crayon is the Green Crayon .

Use to measure.
Question 2.

Explanation :
The Blue Yarn isÂ  about 4 long .

Question 3.
THINK SMARTER
Kiley measures a package with her paper clip measuring tool. About how long is the package?

Explanation :
As per the above figure the Kiley package is about 4 paper clips .

### Lesson 9.6 Time to the Hour

Essential Question How do you tell time to the hour on a clock that has only an hour hand?

Listen and Draw

Start at 1. Write the unknown numbers.

MATHEMATICAL PRACTICES
Look for Structure How are a clock face and ordering numbers alike?

Explanation :
Starts at 1 .
The Missing Number After 1 or Before 3 will be 2
The Missing Number After 8 or Before 10 will be 9
The Missing Number After 5 or Before 7 will be 6
The Missing Number After 11 will be 12
The clock ordering of numbers will be from left of the clock moving downwards to upwards towards right of the clock .

Share and Show

Look at where the hour hand points. Write the time.
Question 1.

______
9 o ‘ Clock
Explanation :
The Hour’s hand is pointing towards 9 so, It is 9 o ‘ Clock

Question 2.

______
1 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 1 so, It is 1 o ‘ Clock

Question 3.

______
11 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 11 so, It is 11 o ‘ Clock

Question 4.

______
6 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 6 so, It is 6 o ‘ Clock

Question 5.

______
7 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 7 so, the time is 7 o ‘ Clock

Question 6.

_______
5 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 5 so, the time is 5 o ‘ Clock

MATHEMATICAL PRACTICE Make Connections Look at where the hour hand points. Write the time.
Question 7.

______
4 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 4 so, the time is 4 o ‘ Clock

Question 8.

_______
10 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 10 so, the time is 10 o ‘ Clock

Question 9.

_______
6 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 6 so, the time is 6 o ‘ Clock

Question 10.

_______
12 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 12 so, the time is 12 o ‘ Clock

Question 11.

_______
1 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 1 so, the time is 1 o ‘ Clock

Question 12.

_______
3 o ‘ Clock
Explanation :
The Hour’s hand is pointing to 3 so, the time is 3 o ‘ Clock

Question 13.
THINK SMARTER
On Raeâ€™s clock, the hour hand points to the 9. Circle Raeâ€™s clock.

9 o ‘ Clock

Explanation :
In the first clock the hour hand is pointing 11 so, the time is 11 o ‘ clock
In the Second clock the hour hand is pointing 9 so, the time is 9 o ‘ clock
In the Third clock the hour hand is pointing 11 so, the time is 11 o ‘ clock
So, Second Clock is the right clock .

Problem Solving â€¢ Applications

Question 14.
THINK SMARTER
Which time is not the same? Circle it.

Explanation :
In the first clock the hour hand is pointing 11 so, the time is 11 o ‘ clock But the time written as 1 : 00 so . it is wrong .
In the Second clock the hour hand is pointing 1 so, the time is 1 o ‘ clock . It is Right .

Question 15.
GO DEEPER
Manny leaves for school at 8 oâ€™clock. Write and draw to show 8 oâ€™clock.

_______

Explanation :
The hour hand is pointing 8 so, the time is 8 o ‘ clock

Question 16.
THINK SMARTER
Look at the hour hand. What is the time?

Explanation :
The Hour Hand is pointing 7 . So, the time is 7 : 00 .

TAKE HOME ACTIVITY â€¢ Have your child describe what he or she did in this lesson.

### Time to the Hour Homework & Practice 9.6

Look at where the hour hand points. Write the time.
Question 1.

______
2 o’ clock
Explanation :
The Short Hand or Hour Hand is pointing 2 . So, the time is 2 : 00 .

Question 2.

______
9 o’ clock
Explanation :
The Short Hand or Hour Hand is pointing 9 . So, the time is 9 : 00 .

Question 3.

______
12 o’ clock
Explanation :
The Short Hand or Hour Hand is pointing 12 0′ clock. So, the time is 12 : 00 .

Problem Solving
Solve.
Question 4.
Which time is not the same? Circle it.

Explanation :
In the first clock the hour hand is pointing 7 so, the time is 7 o ‘ clock . It is Wrong .
In the Second clock the hour hand is pointing 8 so, the time is 8 o ‘ clock. But the time written as 7 : 00 so . it is wrong .

Question 5.
WRITE
Draw a clock to show where the hour hand points for 11:00.
11 o ‘ Clock

Explanation :
The Hour’s hand is pointing to 11 so, It is 11 o ‘ Clock

Lesson Check
Question 1.
Look at the hour hand. What is the time? Write the time.

3 o’ clock
Explanation :
The Short Hand or Hour Hand is pointing 3 . So, the time is 3 : 00 .

Question 2.
Look at the hour hand. What is the time? Write the time.

9 o’ clock
Explanation :
The Short Hand or Hour Hand is pointing 9 . So, the time is 9 : 00 .

Spiral Review
Question 3.
What is the sum? Write the number.
40 + 30 = _____
40 + 30 = 70

Question 4.
What is the sum? Write the number
53 + 30 = ______
53 + 30 = 83

### Lesson 9.7 Time to the Half Hour

Essential Question How do you tell time to the half hour on a clock that has only an hour hand?
To tell time to the half hour on a clock that an hour hand exactly halfway between the two numbers
Example:
To represent five and half an hour would be exactly here halfway between five and six .

Listen and Draw

Circle 4:00, 5:00, or between 4:00 and 5:00 to describe the time shown on the clock.

4:00
between 4:00 and 5:00
5:00

4:00
between 4:00 and 5:00
5:00

4:00
between 4:00 and 5:00
5:00

Explanation :
In the first clock the short hand or hour hand points 4 so, the time is 4 o’clock.
In the second clock the short hand or hour hand points exactly half way in between 4 and 5
In the Third clock the short hand or hour hand points 5 so, the time is 5 o’clock.

MATHEMATICAL PRACTICES
Reasoning Use before and after to describe the time shown on the middle clock.

Share and Show

Look at where the hour hand points. Write the time.
Question 1.

half past 1 o’ clock
Time is 1:30
Explanation:
Half-past 1 is a short way of saying it’s half an hour (30 minutes) after 1:00.
Here the short hand or hour hand points in between 1 and 2.
so the Time is 1:30.

Question 2.

half past 4 o’ clock
Time is 4:30
Explanation:
Half-past 4 is a short way of saying it’s half an hour (30 minutes) after 4:00.
Here the short hand or hour hand points in between 4 and 5.
so the Time is 4:30.

Question 3.

half past 11 o’ clock
Time is 11:30
Explanation:
Half-past 11 is a short way of saying it’s half an hour (30 minutes) after 11:00.
Here the short hand or hour hand points in between 11 and 12.
so the Time is 11:30.

Question 4.

half past 3 o’ clock
Time is 3:30
Explanation:
Half-past 3 is a short way of saying it’s half an hour (30 minutes) after 3:00.
Here the short hand or hour hand points in between 3 and 4.
so the Time is 3:30.

MATHEMATICAL PRACTICE Use Reasoning Look at where the hour hand points. Write the time.
Question 5.

half past 5 o’ clock
Time is 5:30
Explanation:
Half-past 5 is a short way of saying it’s half an hour (30 minutes) after 5:00.
Here the short hand or hour hand points in between 5 and 6.
so the Time is 5:30.

Question 6.

half past 10 o’ clock
Time is 10:30
Explanation:
Half-past 10 is a short way of saying it’s half an hour (30 minutes) after 10:00.
Here the short hand or hour hand points in between 10 and 11.
so the Time is 10:30.

Question 7.

half past 2 o’ clock
Time is 2:30
Explanation:
Half-past 2 is a short way of saying it’s half an hour (30 minutes) after 2:00.
Here the short hand or hour hand points in between 2 and 3.
so the Time is 2:30.

Question 8.

half past 9 o’ clock
Time is 9:30
Explanation:
Half-past 9 is a short way of saying it’s half an hour (30 minutes) after 9:00.
Here the short hand or hour hand points in between 9 and 10.
so the Time is 9:30.

Question 9.
THINK SMARTER
Maya starts reading at half past 8. Circle the clock that shows the time Maya starts reading.

Maya starts reading at half past 8
Time is 8:30
first clock is right

Explanation:
Half-past 8 is a short way of saying it’s half an hour (30 minutes) after 8:00.
Here the short hand or hour hand points in between 8 and 9.
so the Time is 8:30.

Problem Solving â€¢ Applications

Question 10.
THINK SMARTER
Tim plays soccer at half past 9:00. He eats lunch at half past 1:00. He sees a movie at half past 2:00.
Look at the clock. Write what Tim does

Tim play Soccer at half past 9: 00 means the time is 9 : 30
Tim eats lunch at half past 1:00. means the time is 1 : 30
Tim sees a movie at half past 2:00 means the time is 2 : 30
From the above clock we notice, Here the short hand or hour hand points in between 2 and 3.
so the Time is 2:30.
half past 2 o’ clock
Explanation:
Half-past 2 is a short way of saying it’s half an hour (30 minutes) after 2:00.
Here the short hand or hour hand points in between 2 and 3.
so the Time is 2:30.

Question 11.
GO DEEPER
Tyra has a piano lesson at 5:00. The lesson ends at half past 5:00. How much time is Tyra at her lesson? Circle your answer.
half hour
hour
Tyra piano class is at = 5 : 00
Tyra piano class end at = half past 5:00 = 5 : 30
Time is Tyra at her lesson = 5 : 30 – 5 : 00 = 30 minutes or half an hour .

Question 12.
THINK SMARTER
What time is it? Circle the time that makes the sentence true.

half past 5 o’ clock
Time is 5:30
Explanation:
Half-past 5 is a short way of saying it’s half an hour (30 minutes) after 5:00.
Here the short hand or hour hand points in between 5 and 6.
so the Time is 5:30.

TAKE HOME ACTIVITY â€¢ Say a time, such as half past 10:00. Ask your child to describe where the hour hand points at this time.
half past 10 o’ clock
Time is 10:30
Explanation:
Half-past 10 is a short way of saying it’s half an hour (30 minutes) after 10:00.
Here the short hand or hour hand points in between 11 and 10.
so the Time is 10:30.

### Time to the Half Hour Homework & Practice 9.7

Look at where the hour hand points. Write the time.
Question 1.

half past 10 o’ clock
Time is 10:30
Explanation:
Half-past 10 is a short way of saying it’s half an hour (30 minutes) after 10:00.
Here the short hand or hour hand points in between 11 and 10.
so the Time is 10:30.

Question 2.

half past 3 o’ clock
Time is 3:30
Explanation:
Half-past 3 is a short way of saying it’s half an hour (30 minutes) after 3:00.
Here the short hand or hour hand points in between 3 and 4.
so the Time is 3:30.

Question 3.

half past 1 o’ clock
Time is 1:30
Explanation:
Half-past 1 is a short way of saying it’s half an hour (30 minutes) after 1:00.
Here the short hand or hour hand points in between 1 and 2.
so the Time is 1:30.

Problem Solving
Solve.
Question 4.
Greg rides his bike at half past 4:00. He eats dinner at half past 6:00. He reads a book at half past 8:00.
Look at the clock. Write what Greg does.

Greg rides his bike at half past 4:00 = 4 : 30
Greg eats dinner at half past 6:00. = 6 : 30
Greg reads a book at half past 8:00 = 8 : 30
The Time in the above clock is 6 : 30 so, at half past 6 o’clock Grey is having dinner .
Explanation:
Half-past 6 is a short way of saying it’s half an hour (30 minutes) after 6:00.
Here the short hand or hour hand points in between 6 and 7.
so the Time is 6:30.

Question 5.
WRITE
Draw clocks to show where the hour hand points for 5:00 and half past 5:00.

Explanation :
In First Clock the Hour hand or Short Hand points in between 5 and 6.
so the Time is 5:30.
In Second Clock the hour hand or short hand points to 5
So, the Time is 5 : 00

Lesson Check
Question 1.
Look at the hour hand. What is the time? Write the time.

half past 5 o’ clock
Time is 5:30
Explanation:
Half-past 5 is a short way of saying it’s half an hour (30 minutes) after 5:00.
Here the short hand or hour hand points in between 5 and 6.
so the Time is 5:30.

Question 2.
Look at the hour hand. What is the time? Write the time.

half past 9 o’ clock
Time is 9:30
Explanation:
Half-past 9 is a short way of saying it’s half an hour (30 minutes) after 9:00.
Here the short hand or hour hand points in between 9 and 10.
so the Time is 9:30.

Spiral Review
Question 3.
What number does the model show? Write the number.

The Above Model shows 10 ten lines and 3 ones. so the number is
10 + 3 = 13

Question 4.
How many tens and ones make this number?

14 = 10 + 4
10 tens and 4 ones .

### Lesson 9.8 Tell Time to the Hour and Half Hour

Essential Question How are the minute hand and hour hand different for time to the hour and time to the half hour?
TellingÂ half hours
Yes, at 1:30 theÂ hour handÂ points exactly halfway between 1 and 2! TheÂ hour handÂ tells us a lot about theÂ time! … TheÂ minute handÂ spins all the way around the clock everyÂ hour. It makes it easier to see if it’s 1:10, or 1:15, or even 1:12

Listen and Draw

Each clock has an hour hand and a minute hand. Use what you know about the hour hand to write the unknown numbers.

It is 1:00.
The hour hand points to the _____.
The minute hand points to the _____.
It is 1:00.
The hour hand points to the 1.
The minute hand points to the 12.

It is half past 1:00.
The hour hand points between the _____ and the ____.
The minute hand points to the _____.
It is half past 1:00.
The hour hand points between the 1 and the 2 .
The minute hand points to the 6 .

MATHEMATICAL PRACTICES
Use Tools Look at the top clock. Explain how you know which is the minute hand.
The largeÂ hand on a clockÂ that points to theÂ minutes. It goes once around theÂ clockÂ every 60Â minutesÂ (oneÂ hour). Example: in theÂ clockÂ on the left, theÂ minute handÂ is just past the “4”, and if you count the little marks from “12” it shows that it is 22Â minutesÂ past theÂ hour.

Share and Show

Write the time.
Question 1.

Explanation:
It is half past 1:00.
The hour hand points between the 1 and the 2 .
The minute hand points to the 6 .

Question 2.

Explanation:
It is half past 1:00.
The hour hand points between the 1 and the 2 .
The minute hand points to the 6 .

Question 3.

Explanation :
It is 4:00.
The hour hand points to the 4.
The minute hand points to the 12.

MATHEMATICAL PRACTICE Attend to Precision Write the time.
Question 4.

Explanation:
It is half past 7:00.
The hour hand points between the 7 and the 8 .
The minute hand points to the 6 .

Question 5.

Explanation :
It is 9:00.
The hour hand points to the 9.
The minute hand points to the 12.

Question 6.

Explanation:
It is half past 8:00.
The hour hand points between the 8 and the 9 .
The minute hand points to the 6 .

Question 7.

Explanation:
It is half past 3:00.
The hour hand points between the 3 and the 4 .
The minute hand points to the 6 .

Question 8.

Explanation :
It is 2:00.
The hour hand points to the 2.
The minute hand points to the 12.

Question 9.

Explanation :
It is 6:00.
The hour hand points to the 6.
The minute hand points to the 12.

Question 10.
Sara goes to the park when both the hour hand and the minute hand point to the 12. What time does Sara go to the park?
1:00
12:00
12:30

Explanation
It is 12:00.
The hour hand points to the 12.
The minute hand points to the 12.

Question 11.
THINK SMARTER
Mel goes to the park when the hour hand points between the 3 and 4 and the minute hand points to the 6. What time does Mel go to the park?
3:00
3:30
6:00

Time Mel go to park = 3 : 30

Explanation:
It is half past 3:00.
The hour hand points between the 3 and the 4 .
The minute hand points to the 6 .

Problem Solving â€¢ Applications

Solve.
Question 12.
Linda wakes up at 6:30. Draw to show what time Linda wakes up.

Explanation:
It is half past 6:00.
The hour hand points between the 6 and the 7 .
The minute hand points to the 6 .

Question 13.
David left school at 3:30. Circle the clock that shows 3:30.

Question 14.
GO DEEPER
The hour hand points halfway between the 2 and 3. Draw the hour hand and the minute hand. Write the time.

Question 15.
THINK SMARTER
Choose all the ways that name the time on the clock.

Explanation:
It is half past 7:00.
The hour hand points between the 7 and the 8 .
The minute hand points to the 6 .

TAKE HOME ACTIVITY â€¢ At times on the half hour, have your child show you the minute hand and the hour hand on a clock and tell what time it is.

### Tell Time to the Hour and Half Hour Homework & Practice 9.8

Write the time.
Question 1.

Explanation :
It is 8:00.
The hour hand points to the 8.
The minute hand points to the 12.

Question 2.

Explanation:
It is half past 1:00.
The hour hand points between the 1 and the 2 .
The minute hand points to the 6 .

Question 3.

Explanation :
It is 5:00.
The hour hand points to the 5.
The minute hand points to the 12.

Question 4.

Explanation:
It is half past 9:00.
The hour hand points between the 10 and the 9 .
The minute hand points to the 6 .

Question 5.

Explanation :
It is 11:00.
The hour hand points to the 11.
The minute hand points to the 12.

Question 6.

Explanation:
It is half past 10:00.
The hour hand points between the 10 and the 11 .
The minute hand points to the 6 .

Problem Solving
Solve.
Question 7.
Lulu walks her dog at 7 oâ€™clock. Bill walks his dog 30 minutes later. Draw to show what time Bill walks his dog.Â

Lulu walks her dog at 7 oâ€™clock.
Bill walks his dog 30 minutes later. = 7:00 + 0.30 = 7:30

Question 8.
WRITE
Draw a clock to show the time 1:30.
Explanation:
It is half past 1:00.
The hour hand points between the 1 and the 2 .
The minute hand points to the 6 .
Explanation:
It is half past 7:00.
The hour hand points between the 7 and the 8 .
The minute hand points to the 6 .

Lesson Check
Question 1.
What time is it? Write the time.

______
It is half past 7:00.
Explanation:
It is half past 7:00.
The hour hand points between the 7 and the 8 .
The minute hand points to the 6 .

Question 2.
What time is it? Write the time.

______
2:00
Explanation :
It is 2:00.
The hour hand points to the 2.
The minute hand points to the 12.

Spiral Review
Question 3.
What is the sum? Write the number.
48 + 20 = _____
48 + 20 = 68
Explanation :
Adding addend 48 and addend 20 we get sum 68 .

Question 4.
How many tens and ones are in the sum? Write the numbers. Write the sum.

____ tens _____ ones
67 + 25 = 92
9 tens and 2 ones.

### Lesson 9.9 Practice Time to the Hour and Half Hour

Essential Question How do you know whether to draw and write time to the hour or half hour?
The short hand tells us theÂ hour. The long hand tells us the minutes.Â WhenÂ the long hand is pointing at the 6, it isÂ halfÂ of theÂ hour.Â WriteÂ in theÂ timeÂ below eachÂ clock.

Listen
Circle the clock that matches the problem.

MATHEMATICAL PRACTICES
Generalize Describe how you know which clock shows 1:30.
The fifth clock
Explanation :
It is half past 1:00.
The hour hand points between the 1 and the 2 .
The minute hand points to the 6 .

Share and Show

Use the hour hand to write the time. Draw the minute hand.
Question 1.

Explanation :
It is 4:00.
The hour hand points to the 4.
The minute hand points to the 12.

Question 2.

Explanation :
It is half past 11:00.
The hour hand points between the 11 and the 12 .
The minute hand points to the 6 .

Question 3.

Explanation :
It is half past 6:00.
The hour hand points between the 6 and the 7 .
The minute hand points to the 6 .

Question 4.

Explanation :
It is 7:00.
The hour hand points to the 7.
The minute hand points to the 12.

Question 5.

Explanation :
It is 2:00.
The hour hand points to the 2.
The minute hand points to the 12.

Question 6.

Explanation :
It is half past 3:00.
The hour hand points between the 3 and the 4 .
The minute hand points to the 6 .

MATHEMATICAL PRACTICE Use Diagrams Use the hour hand to write the time. Draw the minute hand.
Question 7.

Explanation :
It is 10:00.
The hour hand points to the 10.
The minute hand points to the 12.

Question 8.

Explanation :
It is half past 12:00.
The hour hand points between the 12 and the 1 .
The minute hand points to the 6 .

Question 9.

Explanation :
It is 5:00.
The hour hand points to the 5.
The minute hand points to the 12.

Question 10.

Explanation :
It is half past 10:00.
The hour hand points between the 10 and the 11 .
The minute hand points to the 6 .

Question 11.

Explanation :
It is 12:00.
The hour hand points to the 12.
The minute hand points to the 12.

Question 12.

Explanation :
It is half past 5:00.
The hour hand points between the 5 and the 6 .
The minute hand points to the 6 .

Question 13.
THINK SMARTER
What is the error? Zoey tried to show 6:00. Explain how to change the clock to show 6:00.

Zoey shows the time 6 : 00 wrongly.
To change the clock to show 6:00, We, should point the short hand or hand hand to 6 and the long hand should point 12.
Then , the Time will be

Problem Solving â€¢ Applications

Solve.
Question 14.
Vince goes to a baseball game at 4:30. Draw to show what time Vince goes to a baseball game.

Vince goes to a baseball game at 4:30.

Explanation :
It is half past 4:00.
The hour hand points between the 4 and the 5 .
The minute hand points to the 6 .

Question 15.
GO DEEPER
Brandon has lunch at 1 oâ€™clock. Write and draw to show what time Brandon has lunch.

Brandon has lunch at 1 oâ€™clock.
Explanation :
It is 1:00.
The hour hand points to the 1.
The minute hand points to the 12.

Question 16.
THINK SMARTER
Juan tried to show 8:30. He made a mistake.

What did Juan do wrong? Explain his mistake.
juan tired to show 8 : 30 but he showed 7 : 30 as, the our hand is in between 7 and 8.
To show 8 :30. we should mark the half hand exactly in between 8 and 9 .
Explanation :
It is half past 8:00.
The hour hand points between the 8 and the 9 .
The minute hand points to the 6 .

TAKE HOME ACTIVITY â€¢ Show your child the time on a clock. Ask him or her what time it will be in 30 minutes

### Practice Time to the Hour and Half Hour Homework & Practice 9.9

Use the hour hand to write the time. Draw the minute hand.
Question 1.

Explanation :
It is 11:00.
The hour hand points to the 11.
The minute hand points to the 12.

Question 2.

Explanation :
It is half past 8:00.
The hour hand points between the 8 and the 9 .
The minute hand points to the 6 .

Question 3.

Explanation :
It is half past 2:00.
The hour hand points between the 2 and the 3 .
The minute hand points to the 6 .

Problem Solving
Solve.
Question 4.
Billy played outside for a half hour. Write how many minutes Billy played outside.
_______ minutes
Billy played outside for a half hour.
half an hour = 30 minutes .

Question 5.
WRITE
Draw a clock to show a time to the hour. Draw another clock to show a time to the half hour. Write each time.

Lesson Check
Question 1.
Write the time.

It is 11:00.
The hour hand points to the 11.
The minute hand points to the 12.

Spiral Review
Question 2.
What is the difference? Write the number.
80 – 30 = _____
80 – 30 = 50

Question 3.
Use . Amy measures the eraser with . About how long is the eraser?

Explanation :
To Measure eraser we require about 4

### Measurement Review/Test

Question 1.
Match each word on the left to a drawing on the right.

Question 2.
Is the first line shorter than the second line? Choose Yes or No.

Question 3.
The crayon is about 5 tiles long. Draw tiles below the crayon to show its length.

The length of the crayon is represented in the above figure

Question 4.
Use the below . About how long is the ?

Question 5.
Measure the

Question 6.
Look at the hour hand. What is the time?

Question 7.
What time is it? Circle the time that makes the sentence true.

Question 8.
Choose all the ways that name the time on the clock.

Explanation :
It is half past 11:00.
The hour hand points between the 11 and the 12 .
The minute hand points to the 6 .

Question 9.
Draw the hand on the clock to show 9:30.

Explanation :
It is half past 9:00.
The hour hand points between the 9 and the 10 .
The minute hand points to the 6 .

Question 10.
GO DEEPER
Lucy tried to show 5:00. She made a mistake.

Draw hands on the clock to show 5:00.

What did Lucy do wrong? Explain her mistake.

Lucy didn’t indicate the hour or short hand in the clock .
Explanation :
It is 5:00.
The hour hand points to the 5.
The minute hand points to the 12.

Question 11.
THINK SMARTER+