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Addition Equations

100

Solve for r:

r + 13 = 20

r = 7

200

Solve for x:

x + 17 = -22

x = -39

300

Solve for p:

87 = 30 + p

p = 57

400

Solve for w:

45.4 = w + 9.13

w = 36.27

500

Write the following sentence as an equation:

The sum of 18 and x is 36

18 + x = 36

Subtraction Equations

100

n - 12 = 9

n = 21

200

x - 25 = -30

x = -5

300

68 = x - 52

n = 120

400

k - 3.6 = 12.14

k = 15.74

500

Write the following sentence as an equation:

16 equals x decreased by 22

16 = x - 22

Multiplication Equations

100

7x = 14

x = 2

200

200x = 1800

x = 9

300

-18x = -54

x = 3

400

3.2j = 12.8

j = 4

500

Write the following sentence as an equation:

Twice a number equals 24

2x = 24

Division Equations

100

x/3 = 10

x = 30

200

b/100 = 40

b = 4,000

300

g/-8 = 16

g = -128

400

c/3.4 = 9.3

c = 31.62

500

Write the following sentence as an equation:

The quotient of a number, x, and -5 is -20

x/-5 = -20