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Addition
Subtraction
Multiplication
Division
Decimals
100

x + 4 = 25

What is x=21

100

x - 2 = 6

What is x=8

100

9x = 27

What is x=3

100

y/6 = 2

What is y=12

100

m + 2.4 = 3.7

What is m=1.3

200

a + 13 = 20

What is a=7

200

d - 7 = 9

What is d=16

200

7x = 63

What is x=9

200

x/4 = 14

What is x=56

200

x - 66.09 = 102.8

What is x=168.89

300

n - 8 = 14

What is n=22

300

k - 83 =121

What is k=204

300

5e = 400

What is e=80

300

x/6 = 6

What is x=36

300

5.6 = 0.8x

What is x=7

400

x + 36 = 100

What is x=64

400

x - 327 = 665

What is x=992

400

11x = 275

What is x=25

400

28 = a/13

What is a=364

400

c/0.29 = 5.5

What is c=1.595

500

27 = c + 27

What is c=0

500

a - 163 = 392

What is a=555

500

21y = 756

What is x=36

500

80 = x/15

What is x=1200

500

0.12 = y/0.12

What is 0.0144