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Addition
Subtraction
Multiplication
Division
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

200

a + 13 = 10

What is x = -3

200

d - 7 = -9

What is d = -2

200

-7x = -63

What is x = 9

200

x/4 = -11

What is x = -44

300

n + 8 = 17

What is n = 9

300

k - 13 =42

What is k = 55?

300

8e = 42

What is e = 5 1/4 or 5.25?

300

x/6 = -6

What is x = -36

400

x + 36 = -100

What is x = -136

400

x - 6.3 = 9.5

What is x = 15.8?

400

-12x = 54?

What is x = -4.5?

400

0.4 = a/8

What is a = 3.2?

500

-27 = c + 27

What is c = -56

500

a - 16 = -5

What is a = 11?

500

-21y = -756

What is y = 36

500

-80 = x/15

What is x = -1200