Inverse Operations
Solve for the Unknown Variable
Simplify the Expression
Addition and Subtraction
Multiplication
100

What is the inverse operation of addition?

Subtraction

100

Solve for x

x + 3 =10

x = 7

100

Simplify

3x + 5x

8x

100

82 + 4 = ?

86

100

8 * 8 = ?

64

200

What is the inverse operation of multiplication?

Division

200

Solve for y

2y - 4 = 10

y = 7

200

4y + 7 - 3y + 2

y + 9

200

100 - 7 = ?

93

200

42 / 7 = ?

6

300

What operation is used here: 9b

Multiplication

300

Solve for b

5b + 9 = 34


b = 5

300

Simplify

6a + 2b - 3a + 4b 

9a + 6b

300

48 + 2 - 10 = ?

40

300

4,000 / 10

400

400

If c + 5 = 12, what is the inverse operation isolates c?

Subtraction

400

Solve for z

4 (z - 2) = 16

z = 6

400

Simplify

2(b-3) - 4(b+1) + 10(b) 

16b - 5

400

280 - 65 + 42 = ?

257

400

10 * 10 = ?

100

500

Given 3m = 12, what inverse operation is need to find m?

Division

500

Solve for x

2x + 3 = 5x - 6


x = 3

500

Simplify

3c + 2(c - 3) - 4(c + 1)

c - 7

500

1080 - 28 - 674 + 1 =

379

500

True or False

500 * 2 / 600 is > 1

Bonus point: What is 500 * 2 / 600 ?

True

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