Simple Equations with One Variable

Name: _______________________________

Date: _______________________________

Instructions: Solve each equation to find the value of the unknown variable. Show your working.

Section A: Addition Equations

1. x + 5 = 12

x = __________

2. y + 8 = 20

y = __________

3. a + 15 = 27

a = __________

4. m + 6 = 18

m = __________

5. b + 11 = 25

b = __________

6. n + 9 = 30

n = __________

Section B: Subtraction Equations

7. x - 4 = 10

x = __________

8. y - 7 = 15

y = __________

9. p - 12 = 8

p = __________

10. c - 5 = 19

c = __________

11. d - 14 = 6

d = __________

12. k - 9 = 21

k = __________

Section C: Mixed Practice

13. t + 13 = 35

t = __________

14. w - 8 = 17

w = __________

15. r + 16 = 40

r = __________

16. s - 11 = 14

s = __________