All the solutions provided in McGraw Hill My Math Grade 2 Answer Key PDF Chapter 11 Lesson 11 Measure on a Number Line will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 2 Answer Key Chapter 11 Lesson 11 Measure on a Number Line
Explore and Explain
__________ – _____________ = _____________
Teacher Directions: Place a crayon and a pair of scissors on the number line. Line up the ends at 0. How much longer are the scissors than the crayon? Repeat with other pairs of objects. Draw a pair of objects on the number line and write the subtraction sentence that shows how much longer one object is than another.
Answer:
The crayon is 10 centimeters long
The scissors is 9 centimeters long
10 – 9 = 1
The scissors is 1 centimeter shorter than the crayon.
See and Show
The crayon is 
centimeters long.
The paper clip is 
centimeters long.
Use the number line to answer the questions.
Question 1.
How long is the pencil?
___________ inches
Answer:
5 inches
Explanation:
The pencil is 5 inches long
66 – 61 = 5
Question 2.
How much longer is the marker than the rubber band?
_____________ inches
Answer:
3 inches.
Explanation:
Length of rubber band is 3 inches
Length of the marker is 6 inches
6 – 3 = 3
3 inches longer is the marker than the rubber band
Talk Math How does the number line help you compare measurements?
Answer:
It can be used to measure the length of the objects by subtracting the final coordinate of the object’s position
On My Own
Use the number line to answer the questions.
Question 3.
How long is the glue stick?
______________ centimeters
Answer:
7 centimeters
Explanation:
The glue stick is 7 centimeters
77 – 70 = 7
Question 4.
How long is the push pin?
______________ centimeters
Answer:
2 centimeters
Explanation:
The push pin is 2 centimeters long
83 – 81 = 2
Question 5.
How long is the eraser?
_____________ centimeters
Answer:
6 centimeters
Explanation:
The eraser is 6 centimeters long
78 -72 = 6
Question 6.
How much longer is the pencil than the glue stick?
_______________ centimeters
Answer:
The pencil is 2 centimeters longer than glue stick.
Explanation:
The glue stick is 7 centimeters
The pencil is 9 centimeters long
9 – 7 = 2
Question 7.
How long are the eraser and push pin in all?
_____________ centimeters
Answer:
8 centimeters
Explanation:
The push pin is 2 centimeters long
The eraser is 6 centimeters long
6 + 2 = 8
eraser and push pin are 8 centimeters altogether
Question 8.
How much shorter is the push pin than the pencil?
_______________ centimeters
Answer:
Explanation:
The pencil is 9 centimeters long
The push pin is 2 centimeters long
9 – 2 = 7
7 centimeters shorter is the push pin than the pencil
Problem Solving
Question 9.
Makenna is 38 inches tall. Her brother is 26 inches tall. How much taller is Makenna?
____________ inches
Answer:
12 inches
Explanation:
Makenna is 38 inches tall.
Her brother is 26 inches tall.
38 – 26 = 12
12 inches taller is Makenna.
Question 10.
Carly’s dog Sebastian is 22 inches long. Her cat, Annabelle, is 17 inches long. How much longer is Sebastian?
Answer:
5 inches
Explanation:
Carly’s dog Sebastian is 22 inches long.
Her cat, Annabelle, is 17 inches long.
22 – 17 = 5
5 inches longer is Sebastian
Question 11.
Levi found a trail in the woods that is 54 meters long. Then he found a second trail that is 83 meters long. How much longer is the second trail?
____________ meters
Answer:
29 meters
Explanation:
Levi found a trail in the woods that is 54 meters long.
Then he found a second trail that is 83 meters long.
83 – 54 = 29
29 meters longer is the second trail.
Write Math How can a number line help you measure objects? Explain.
Answer:
Number line is a line marked with numbers with unit distance apart.
It can be used to measure the length of the objects by subtracting the final length of the object’s position
McGraw Hill My Math Grade 2 Chapter 11 Lesson 11 My Homework Answer Key
Practice
Use the number line to answer the questions.
Question 1.
How long is the truck?
_____________ centimeters
Answer:
7 centimeters
Explanation:
The truck is 7 centimeters long
74 – 67 = 7
Question 2.
How long is the car?
_____________ centimeters
Answer:
6 centimeters
Explanation:
The car is 6 centimeters long
66 – 60 = 6
Question 3.
How long is the barrette?
______________ inches
Answer:
2 inches.
Explanation:
the barrette is 2 inches long
83 – 81 = 2
Question 4.
How much longer is the nail polish than the earring?
______________ inches
Answer:
1 inch
Explanation:
The nail polish is 3 inches long
the earring is 1 inches long
3 – 1 = 2
2 inch longer is the nail polish than the earring
Question 5.
Sean builds a block tower that ¡s 35 inches high. Victoria builds a block tower that is 27 inches high. How much higher is Sean’s tower?
_____________ inches
Answer:
8 inches.
Explanation:
Sean builds a block tower that ¡s 35 inches high.
Victoria builds a block tower that is 27 inches high.
35 – 27 = 8
8 inches higher is Sean’s tower
Test Practice
Question 6.
36 inches + 26 inches = _____________
(A) 62 inches
(B) 62 centimeters
(C) 62 feet
(D) 62 meters
Answer:
A
Explanation:
36 inches + 26 inches =62 inches
The sum of 36 and 26 is 62
Math at Home Help your child create a large number line measured in inches. Have him or her measure objects from your home using the number line.
Answer: