WS #1

Addition Properties

Identify the addition property used in each question.

1) 5 + (−5) = 0 Property:

2) 7 + (1 + 9) = (7 + 1) + 9 Property:

3) 4 + 6 = 6 + 4 Property:

4) 3 + 0 = 3 Property:

5) (11 + 2) + 8 = 11 + (2 + 8) Property:

6) 9 + 5 = 5 + 9 Property:

7) 7 + 0 = 7 Property:

8) 8 + 10 = 10 + 8 Property:

9) (−2) + 2 = 0 Property:

10) 12 + 0 = 12 Property:

11) 9 + (3 + 4) = (9 + 3) + 4 Property:

12) 6 + (−6) = 0 Property:

13) 8 + 13 = 13 + 8 Property:

14) 5 + 1 = 1 + 5 Property:

15) 0 + 1 = 1 Property:

16) (2 + 5) + 8 = 2 + (5 + 8) Property:

17) 10 + 2 = 2 + 10 Property:

18) (−11) + 0 = −11 Property:

19) 6 + (3 + 7) = (6 + 3) + 7 Property:

20) (−9) + 9 = 0 Property: