We included HMH Into Math Grade 4 Answer Key PDF Module 3 Review to make students experts in learning maths.

Vocabulary

Question 1.
Draw a visual model and write a pair of equations to show why multiplication and division are inverse operations. Explanation:
3x 6 = 18
18 ÷ 3 = 6
Above 2 statements shows both are inversely proportion.

Concepts and Skills

Question 2.
How can you interpret the meaning of the equation 30 = 3 × 10 as a comparison?
A. 30 is 3 more than 10.
B. 10 is 3 fewer than 30.
C. 10 is 3 times as many as 30.
D. 30 is 3 times as many as 10.
Explanation:
30 is 3 times as many as 10 is the meaning of the equation 30 = 3 × 10 as a comparison.

Question 3.
Diane waits 6 minutes in line to buy movie tickets. Josh waits in line 4 times as long as Diane. Let m = the number of minutes Josh waits in line. Select all the equations that can be used to find m.
A. 6 + 4 = m
B. 6 × 4 = m
C. 6 – 4 = m
D. 4 + 4 + 4 + 4 = m
E. 4 + 6 = m
F. 4 × 6 = m
B. 6 × 4 = m
F. 4 × 6 = m
6 x 4 = 24
so, m = 24
Explanation:
Diane waits 6 minutes in line to buy movie tickets.
Josh waits in line 4 times as long as Diane.
Let m = the number of minutes Josh waits in line.
Selected all the equations that used to find m.

Question 4.
Use Tools Jake has 40 pencils. That is 8 times as many as the pens he has. How many pens does Jake have? Tell what strategy or tool you will use to answer the question, explain your choice, and then find the answer.
(A) 5
(B) 8
(C) 32
(D) 48
Explanation:
Jake has 40 pencils. That is 8 times as many as the pens he has.
8 x 5 = 40
Is the strategy or tool that I used to answer.

Write equations to model and solve the problem. Use letters for the unknowns.

Question 5.
Alisha takes 7 minutes to solve a puzzle. Riley takes 4 more minutes than Alisha to solve the puzzle. Jordan takes 3 times as many minutes as Alisha to solve the puzzle. How long does it take Riley and Jordan to each solve the puzzle?
Riley: __________________
Jordan: ____________________
Riley: 7+ 4 = 11
Jordan: 7 x 3 = 21 minutes
Explanation:
Riley takes 21 minutes and Jordan takes 11 minutes to solve the puzzle.

Question 6.
Mei has 18 red marbles. That is 3 times as many as the number of yellow marbles she has. She has 10 fewer green marbles than red marbles. How many green marbles does Mei have? How many yellow?
Green: _______________
Yellow: ______________
Green: 8
Yellow: 6
Explanation:
Mei has 18 red marbles. That is 3 times as many as the number of yellow marbles she has.
18 ÷ 3 = 6
She has 10 fewer green marbles than red marbles.
18 – 10 = 8

Question 7.
During this year’s park survey, rangers counted 28 eagles. That is 4 times as many as they counted in last year’s survey. How many more eagles did the rangers count this year than last year?
21 more eagles that the rangers count this year than last year
Explanation:
28 ÷ 4 = 7
28 – 7 = 21

Question 8.
Mr. Carney tells his class to draw pictures of different types of birds for the class bulletin board. Joel draws 8 pictures. Taylor draws 3 times as many pictures as Joel. If 4 pictures can fit in a row, how many rows of the board can Taylor fill?