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Adding 3 Numbers

English 18 Public

Use doubles and make 10 strategies to solve!

Study Slideshow

8 + 2 + 6 =

16

15

6 + 8 + 4 =

18

15

9 + 5 + _____=15

1

15

4 + 3 + 7 =

14

15

_____ + 7 + 6 = 16

3

15

12 = 4 + 4 + _____

4

15

16 = 4 + 4 + _____

8

15

6 + 3 + 3 =

12

15

13 + 7 + 3 =

23

15

16 + 4 + 7 =

27

15

2 + 5 + 8 =

15

15

5 + 3 + 2 =

10

15

_____ = 8 + 4 + 2

14

15

5 + 4 + 9 =

18

15

7 + _____ + 3 = 14

4

15

13 = 6 + 6 + _____

1

15

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