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Addition and subtraction within 20

English 20 Public

Maths

Study Slideshow

13 - 0 =

13

15

15 - 5 =

10

15

3 + 10 =

13

15

16 - 4 =

12

15

12 + 2 =

14

15

18 - 7 =

11

15

14 + 3 =

17

15

18 - 5 =

13

15

4 + 5 =

9

15

15 + 1 =

16

15

12 - 2 =

10

15

16 + 3 =

19

15

17 - 5 =

12

15

19 - 6 =

13

15

17 + 1 =

18

15

18 - 6 =

12

15

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