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Addition
Subtraction
Multiplication
Division
Decimals
100

x + 4 = 25

What is 21

100
x - 2 = 6
What is 8
100
9x = -27
What is -3
100

y/6 = 2

What is 12

100

m + 3.7 = 2.4

What is 6.1

200
a + 13 = 10
What is -3
200

d - 7 = -5

What is 2

200
-7x = -63
What is 9
200

x/4 = -14

What is -56

200

x + 66.09 = 102.8

What is 36.71

300

n + (-8) = 14

What is 22

300

k - (-83) =121

What is 38

300
-5e = -400
What is 80
300

x/6 = -6

What is -36

300

-5.6 = 0.8x

What is -7

400

x + 36 = -100

What is -136

400

x - 327 = 665

What is 992

400

11x = 275

What is -25

400

28 = a/13

What is 364

400

c/0.29 = 5.5

What is 1.595

500

27 = c + (-27)

What is 54

500

a - (-163) = 392

What is 229

500
-21y = -756
What is 36
500

-80 = x/15

What is -1200

500

0.12 = y/0.12

What is 0.0144