Solving One Step Equations

Addition

100

x + 2 = 5

x = 3

200

x + 7 = 12

x = 5

300

x + 15 = 30

x = 15

400

x + 22 = 45

x = 23

500

x + 100 = 250

x = 150

Subtraction

100

x – 3 = 4

x = 7

200

x – 10 = 8

 x = 18

300

x – 20 = 35

x = 55

400

x – 54 = 28

 x = 82

500

x – 200 = 400

x = 600

Multiplication

100

3x = 9

x = 3

200

5x = 25

x = 5

300

9x = 81

 x = 9

400

14x = 98

x = 7

500

25x = 600

x = 24

Division

100

x ÷ 2 = 6

x = 12

200

x ÷ 4 = 11

x = 44

300

x ÷ 8 = 64

x = 512

400

x ÷ 25 = 20

 x = 500

500

x ÷ 100 = 70

x = 7000

Writing Equations

100

Sam has 8 apples. He needs enough to have 14. How many does he need to add

Equation: x + 8 = 14

x = 6

200

A box weighs 24kg after removing 6kg. What was its original weight?

Equation: x – 6 = 24

x = 30

300

If you multiply a number by 7, you get 35. What’s the number?

Equation: 7x = 35 

x = 5

400

Divide a number by 3 and you get 12. What’s the number?

Equation: x ÷ 3 = 12
 x = 36

500

I have a number. When I add 38, I get 100. What is the number?

Equation: x + 38 = 100
x = 62