凑十法破十法综合练习题

进位加法（凑十法口诀：看大数，分小数，凑成十，算得数。）

退位减法（破十法口诀：看大数，分出10，减小数，加剩数。）

9   +   6   =                 9   +   5   =                 9  +   4   =

9   +   3   =                 9   +   2   =                 9   +   7   =

9   +   8   =                 9   +   9   =                 8   +   8   =

8   +   7   =                 8   +   9   =                 8   +   6   =

15  － 6   =                 12  － 5   =                   17  －  9  =

13  － 4   =                 11  －  5   =                   14 －  7  =

16  － 8 =                   15  －  9   =                   18 －  9  =

12 －  7   =                 14  － 9   =                   13  －  7   =  

12  － 9  =                  11  － 3   =                   12 －  4  =

16  － 9   =                 15  － 8   =                   13  －  8   =

11  － 6   =                 13 －  4   =                   14 －  5   =

13 －  9   =                 17  － 8   =                   14  －  6=

8   +   5   =                 8   +   4   =                 8   +   3   =

7   +   9   =                 7   +   8   =                 7   +   7   =

7   +   6   =                 7   +   4   =                 7   +   5   =

6   +   9   =                 6   +   8   =                 6   +   7   =

6   +   6   =                 6   +   5   =                 5   +   9   =