Chapter 7 Review

Guess, Check, Revise

100

Identify the solution of each equation from the list given using the guess, check, and revise strategy. 

n + 23 = 34; 10, 11, 12

n = 11

200

Identify the solution of the equation from the list given using the guess, check, and revise strategy. 

a - 7 = 10; 17, 18, 19

a = 17

300

Identify the solution of the equation from the list given using the guess, check, and revise strategy. 

9k = 63; 5, 6, 7

k = 7

400

Identify the solution of the equation from the list given using the guess, check, and revise strategy. 

49 ÷ s = 7; 6, 7, 8

s = 7

500

Identify the solution of the equation from the list given using the guess, check, and revise strategy. 

4.5 - y = 1.5; 2, 3, 4

y = 3

Solving Addition Equations

100

Solve the following equation using inverse operations. Show your work. 

s + 6 = 13

s = 7

200

Solve the following equation using inverse operations. Show your work.

49 = n + 26

n = 23

300

Solve the following equation using inverse operations. Show your work.

220 = y + 94

y = 126

400

Solve the following equation using inverse operations. Show your work.

w +7.4 = 21.8

w = 14.4

500

A board that measures 19.5 meters in length is cut into two pieces. One piece measures 7.2 meters. Write and solve an equation to find the length of the other piece.

7.2 + n = 19.5

n = 12.3 meters

Solving Subtraction Equations

100

Solve the following equation using inverse operations. Show your work.

14 = n - 18

n = 32

200

Solve the following equation using inverse operations. Show your work.

y - 52 = 16

y = 68

300

Solve the following equation using inverse operations. Show your work.

s - 183 = 347

s = 530

400

Solve the following equation using inverse operations. Show your work.

19.6 = j - 10.3

j = 29.9

500

Alejandra spent her birthday money on a video game that cost $24, a controller for $13, and a memory card for $16. The total tax was $3. Write and solve a subtraction equation to find how much money Alejandra gave the cashier if she received $4 in change. 

n - 56 = 4

n = 60

Solving Multiplication Problems

100

Solve the following equation using inverse operations. Show your work.

9y = 81

y = 9

200

Solve the following equation using inverse operations. Show your work.

100 = 20x

x = 5

300

Solve the following equation using inverse operations. Show your work.

9z = 108

z = 12

400

Solve the following equation using inverse operations. Show your work.

45.5 = 6.5n

n = 7

500

Four friends decided to split the cost of season concert tickets equally. Each person paid $35. Write and solve an equation to find the total cost of the season concert tickets.

4n = 35

n = $8.75

Solving Division Equations

100

Solve the following equation using inverse operations. Show your work.

5 = w ÷ 5

w = 25

200

Solve the following equation using inverse operations. Show your work.

15 = s ÷ 6

s = 90

300

Solve the following equation using inverse operations. Show your work.

n ÷ 12 = 20

n = 240

400

Solve the following equation using inverse operations. Show your work.

y ÷ 4 = 8.2

y = 32.8

500

Chen is buying a ham. He wants to divide it into 6.5 ounce servings for 12 people. Write and solve a division equation to find what size ham Chen should buy.

n ÷ 12 = 6.5 OR n ÷ 6.5 = 12

n = 78 ounce ham