We included HMH Into Math Grade 2 Answer Key PDF Module 20 Lesson 5 Measure and Compare Lengths in Centimeters to make students experts in learning maths.
HMH Into Math Grade 2 Module 20 Lesson 5 Answer Key Measure and Compare Lengths in Centimeters
I Can measure and then find the difference in the lengths of two objects.
Step It Out
Question 1.
What is the difference between the length of the pencil and the length of the crayon?
A. Measure and record the length of the pencil.
The pencil is ____________ centimeters long.
Answer: The pencil is 9 centimeters long.
B. Measure and record the length of the crayon.
The crayon is ___________ centimeters long.
Answer: The crayon is 5 centimeters long.
C. Write an equation to model and solve this problem.
Answer: n = 9 – 5
D. The difference is ___________ centimeters.
Answer:
Explanation:
The pencil is 9 centimeters long.
The crayon is 5 centimeters long.
let n be the unknown length
n = 9 – 5
n = 4
The difference is 4 centimeters.
Turn and Talk When comparing objects, why must you measure the length of both objects in the same unit?
Answer:
If we measure with the different units the length will be varied.
Question 2.
Compare the length of the feather to the length of the chenille stick.
A. The feather is ___________ centimeters long.
The chenille stick is ___________ centimeters long.
Answer:
The feather is 7 centimeters long.
The chenille stick is 6 centimeters long.
B. Write an equation to find the difference ___________
Answer:
n = 7 – 6
C. The feather is _________ centimeters ____________ than the chenille stick.
Answer:
Explanation:
The feather is 7 centimeters long.
The chenille stick is 6 centimeters long.
let n be the unknown length
n = 7 – 6
n = 1
The feather is 1 centimeters longer than the chenille stick.
Check Understanding
Question 1.
Measure each object and write an equation to find the difference in lengths.
The pencil is __________ centimeters long.
The string of beads is _________ centimeters long ____________
The string of beads is _________ centimeters __________ than the pencil.
Answer:
Explanation:
The pencil is 8 centimeters long.
The string of beads is 12 centimeters long
let n be the unknown length
n = 12 – 8
n = 4
The string of beads is 4 centimeters longer than the pencil.
On Your Own
Use Tools Measure the length of each object. Write an equation to find the difference. Compare the lengths.
Question 2.
__________ centimeters
__________ centimeters
The tulip is __________ centimeters _________ than the daisy.
Answer:
Explanation:
The tulip is 6 centimeters long
The Daisy is 5 centimeters long 6 – 5 = 1
The tulip is 1 centimeters longer than the daisy.
Question 3.
The blue car is __________ centimeters __________ than the red car.
The red car is centimeters __________ centimeters __________ than the blue car.
Answer:
Explanation:
The blue car is 3 centimeters
The red car is 6 centimeters
The blue car is 3 centimeters longer than the red car.
The red car is centimeters 3 centimeters shorter than the blue car.
Question 4.
Measure the length of each object. Write an equation to find the difference. Compare the lengths.
___________ centimeters
___________ centimeters
The brush is __________ centimeters _________ than the paint set.
Answer:
Explanation:
The paint set = 10 centimeters
The brush = 7 centimeters
10 – 7 = 3
The brush is 3 centimeters shorter than the paint set.
Question 5.
Open-Ended Find two objects, each shorter than 20 centimeters. Draw each object, measure it, and write its length. Write an equation and complete a sentence to compare the lengths.
The ___________ is __________ centimeters longer than the ___________.
Answer:
Explanation:
The spoon is 4 centimeters long
The watch is 8 centimeters long
8 – 4 = 4
The watch is 4 centimeters longer than the spoon.