WS #2

Addition Properties

Identify the addition property used in each question.

1) 9 + 5 = 5 + 9 Property:

2) 3 + 0 = 3 Property:

3) (11 + 2) + 8 = 11 + (2 + 8) Property:

4) (−2) + 2 = 0 Property:

5) 7 + 10 + 4 = 10 + 7 + 4 Property:

6) 0 + 6 = 6 Property:

7) 4 + (−4) = 0 Property:

8) 9 + (1 + 18) = (9 + 1) + 18 Property:

9) 13 + 2 = 2 + 13 Property:

10) (−8) + 8 = 0 Property:

11) 3 + (17 + 6) = (3 + 17) + 6 Property:

12) 5 + 7 + 11 = 5 + 11 + 7 Property:

13) (−10) + 0 = −10 Property:

14) 8 + (5 + 2) = (8 + 5) + 2 Property:

15) 7 + (−7) = 0 Property:

16) 0 + 13 = 13 Property:

17) (4 + 16) + 3 = 4 + (16 + 3) Property:

18) (−15) + 15 = 0 Property:

19) 0 + (−5) = −5 Property:

20) 9 + 4 = 4 + 9 Property: