凑十法

.

凑十法

5+6 =

5+7 =

6+6 =

5+8 =

6+8 =

3+8 =

3+9 =

7+6 =

6+9 =

.

6+8 =

4+8 =

4+9 =

6+8 =

7+7 =

.

8+8 =

8+5 =

8+4 =

9+3 =

9+8 =

8+6 =

8+3 =

7+5 =

12

—

8 =

13

—

7 =

.

9+9 =

9+5 =

9+4 =

7+4 =

13

—

9 =

15

—

7 =

.

12

—

5 =

15

—

6 =

16

—

8 =

16

—

8 =

17

—

8 =

15

—

8 =

18

—

9 =

15

—

9 =

14

—

7 =

.

14

—

5 =

—

8 =

—

9 =

—

6 =

—

6 =

16

17

15

14