All the solutions provided in **McGraw Hill My Math Grade 1 Answer Key PDF Chapter 8 Review **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 1 Chapter 8 Review Answer Key

**Vocabulary Check**

**Complete each sentence.**

analog clock

digital clock

half hour

length

measure

minute

o’clock

Question 1.

A ________________ is a type of clock that only uses numbers to show time.

Answer:

digital clock

Explanation:

A digital clock is a type of clock that only uses numbers to show time.

Question 2.

30 minutes past the hour is also called a _________________.

Answer:

half hour

Explanation:

30 minutes past the hour is also called a half hour.

Question 3.

To find the length of an object, you can _______________ it.

Answer:

measure

Explanation:

To find the length of an object, you can measure it.

Question 4.

You can measure how long an object is, or its ________________.

Answer:

length

Explanation:

You can measure how long an object is, or its length.

Question 5.

An ______________ is a clock that uses an hour and minute hand.

Answer:

analog clock

Explanation:

An analog clock is a clock that uses an hour and minute hand.

Question 6.

________________ is a word used to tell time.

Answer:

o’clock

Explanation:

o’clock is a word used to tell time.

Question 7.

There are 60 seconds in 1 ______________.

Answer:

minute

Explanation:

There are 60 seconds in 1 minute.

**Concept Check**

Question 8.

Order the objects by length. Write I for long, 2 for longer, and 3 for longest.

Answer:

Explanation:

I for long is chalk

2 for longer is crayon

and 3 for longest is pencil

**About how many long is each object?**

Question 9.

about ______________ cubes

Answer:

Explanation:

The rope is 6 cubes long

Question 10.

about ______________ cubes

Answer:

Explanation:

The hammer is 8 cubes long

**Write the time on the digital clock.**

Question 11.

8 o’clock

Answer:

Explanation:

The digital clock is showing the time 8 o’clock

Question 12.

half past 3

Answer:

Explanation:

The digital clock is showing the time 3 o’clock

**Problem Solving**

**Solve. Write the time on the clock.**

Question 13.

Aaron has swimming practice at 7:00. It lasts 1 hour. What time does swimming practice end?

Answer:

Explanation:

Aaron has swimming practice at 7:00. It lasts 1 hour.

7 + 1 = 8

so, the swimming ends at 8:00

Question 14.

The party starts at 4 o’clock. The party is over 1 hour later. What time does the party end?

Answer:

Explanation:

The party starts at 4 o’clock.

The party is over 1 hour later

4 + 1 = 5

The party ends at 5:00

**Test Practice**

Question 15.

The hour hand is between 9 and 10. The minute hand is at 6. Which clock is it?

Answer:

Explanation:

The hour hand is between 9 and 10.

The minute hand is at 6.

so, the time is 9:30

**Reflect**

**Show the ways to answer.**

Circle the object that is longer. Explain to a classmate how you found the answer.

Answer:

Explanation:

Pencil is longer than stapler

so, circled the pencil

Show the same time on both of the clocks.

Answer:

Explanation:

The digital clock is showing the time 3 o’clock