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Add and subtract 1-digit and 2-digit numbers to ...

English 24 Public

Add 1-digit and 2-digit numbers to 20, including adding 1, 2 and 3 by counting on Subtract 1-digit and 2-digit numbers to 20, including subtracting 1, 2 and 3 by counting back

Study Slideshow

5 + 1=

6

5

8 + 2 =

10

10

12 + 3 =

15

10

15 + 1=

16

10

7 + 3 =

10

5

9 + 2 =

11

10

6 + 4 =

10

10

10 + 5 =

15

5

8 + 7 =

15

10

3 + 9 =

12

15

12 + 4 =

16

10

7 + 8 =

15

15

10 - 1 =

9

10

12 - 2 =

10

10

15 - 3 =

12

5

18 - 1 =

17

10

1
2
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