2.1.1 Addition and Subtraction Equations − Worksheet

Example 1:

Solve each equation. Check your answer. 1. s − 5 = 3 2. 17 = w − 4

3. k − 8 = − 7

3 8

1 8

4. x − 3.9 = 12.4

5. 8.4 = y − 4.6

6.

= − t

Example 2:

Solve each equation. Check your answer. 7. t + 5 = − 25 8. 9 = s + 9

9. 42 = m + 36

11. + = b 2 3

10. 2.8 = z + 0.5

12. n + 1.8 = 3

2

13. − 10 + d = 7

14. 20 = − 12 + v

15. −46 + q = 5

18. − + = p 5 6

17. − + = c 2 3

2 3

16. 2.8 = − 0.9 + y

2

Example 3: 19. In 1673, the Hope diamond was reduced from is original weight by about 45 carats, resulting in a diamond weighing about 67 carats. Write and solve an equation to find how many carats the original diamond weighed. Show that your answer is reasonable.

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