凑十法-破十法-练习题

凑十法练习题.

9 + 6 = 9 + 5 = 9 + 4 = 9 + 3 = 9 + 8 = 8 + 7 = 8 + 5 = 7 + 9 = 7 + 6 =

6 + 9 = 9 + 2 = 9 + 9 = 8 + 9 = 8 + 4 = 7 + 8 = 7 + 4 = 6 + 8 = 9 + 7 8 + 8 8 + 6 8 + 3 7 + 7 7 + 5 6 + 7 = = = = = = =

6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 = 4 + 9 = 3 + 9 =

18 – 9 =

14 – 9 =

4 + 8 = 4 + 7 = 3 + 8 = 2 + 9 = 破十法练习题

17 – 9 = 16 – 9 = 15 – 9 =

13 – 9 = 12 – 9 = 11 – 9 =

17 – 8 = 16 – 8 = 15 – 8 = 14 – 8 =

13 – 8 = 12 – 8 =

15 – 7 = 14 – 7 = 11 – 7 = 15 – 6 =

11 – 8 = 13 – 7 = 14 – 6 = 16 – 7 =

12 – 7 =

13 – 6 =

12 – 6 = 11 – 6 = 14 – 5 = 13 – 5 =

12 – 5 =

11 – 4= 11 – 5 = 13 – 4= 12 – 3 = 11 – 3 = 12 – 4=

11 – 2 =