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Inverse Operations
Equations
Challenge Equations
Decimals
Fractions
100

What is the inverse operations of subtraction

Addition

100

x - 3 = 11

x = 14

100

x - 52 = 52

x = 104

100

12.85 = x - 4.34

x = 17.19

100

7/10(c) = 4 1/5

c = 6

200

What is the inverse operations of multiplication

Division

200

x + 14 = 22

x = 8

200

x + 39 = 47

x = 8

200

k + 24.75 = 36.12

k = 11.37

200

s + 1/4 = 12 1/2

s = 12 1/4

300

What is the inverse operation of addition

subtraction

300

13x = 39

x = 3

300

t/35 = 42

t = 1,470

300

15.95 = 3.19n 

n = 5

300

t - 2/3 = 5/6

t = 1 1/2

400

What is the inverse operation of division

multiplication

400

x/4 = 23

x = 92

400

16d = 2,864

d = 179

400

t/5.4 = 9.01

t = 48.654

400

2/7(q) = 3

q = 10 1/2

500

3/4(x) = 2

x = 2 2/3

500

x/4 = 42

x = 168

500

936 = 78p

p = 12

500

9.6 = 1.6y

y = 6

500

9 1/12 = k/9

k = 81 3/4