9 Facts Add And Subtract

Front 1

17-9

Back 1

8

Front 2

15-9

Back 2

6

Front 3

9-9

Back 3

0

Front 4

9+8
8+9

Back 4

17

Front 5

9+9

Back 5

18

Front 6

9+5
5+9

Back 6

14

Front 7

0+9
9+0

Back 7

9

Front 8

9+4
4+9

Back 8

13

Front 9

11-9

Back 9

2

Front 10

9+6
6+9

Back 10

15

Front 11

9+2
2+9

Back 11

11

Front 12

9+7
7+9

Back 12

16

Front 13

1+9
9+1

Back 13

10

Front 14

9+3
3+9

Back 14

12

Front 15

14-9

Back 15

5

Front 16

10-9

Back 16

1

Front 17

13-9

Back 17

4

Front 18

18-9

Back 18

9

Front 19

16-9

Back 19

7

Front 20

12-9

Back 20

3