Adding Negative Numbers
Adding Negative Numbers Name: __________________________
Worksheet #1 Period: ________
Let bright-colored squares (red or yellow) represent negative numbers and darker-colored squares (blue or green) represent positive numbers:
= –1, = 1,
= –3, = 3,
= –5, = 5, etc.
Problems 1-8: Write the number represented:
1. = 2. =
3. = 4. =
5. = 6. =
7. = 8. =
A positive and a negative cancel each other out. That is, + = 0. Use this idea to simplify each of the representations in problems 9-13, and write the resulting equation.
9. + =
10. + =
11. + + =
12. + + =
13. + + =
Problems 14-19: Write the equation represented by the pattern.
14. + =
15. + =
16. + =
17. + + =
18. + =
19. + + + =
Problems 10-27: Find the sum.
20. –5 + –2 = 21. –3 + 4 =
22. 2 + –9 = 23. –1 + –2 + –5 =
24. 4 + –3 + 2 = 25. –4 + 3 + –2 =
26. –7 + 5 + –2 = 27. –3 + –4 + –5 + –6 =
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