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Adding to 10 and 20

English 16 Public

Adding using different strategies

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9 + 9 =

18

15

10 + __ = 13

3

15

7 + 7=

14

15

5 + __ = 16

11

15

12 + 12=

24

15

10 + 6=

16

15

5 + ___+ 5= 15

5

15

1 + 2 + 3=

6

15

4 + 4=

8

15

10 + 2=

12

15

11 + 11=

22

15

When we are doubling numbers, are the answers skip counting by 1's or 2's?

2s

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6 + __= 10

4

15

7 +__ = 10

3

15

2+ 2+ __= 10

6

15

Which number is greater? 98 or 89?

98

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