凑十法,破十法 综合练习题. 姓名_____
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
13 - 4 = 11
16 - 8 = 15
12 - 7 = 14
- 5 = 17 - 5 = 14 - 9 = 18 - 9 = 13 页脚内容2
- 9 = - 7 = - 9 = - 7 = 页眉内容
12 - 9 = 11 - 3 = 12 - 4 =
16 - 9 = 15 - 8 = 13 - 8 =
11 - 6 = 13 - 4 = 14 - 5 =
13 - 9 = 17
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 = - 8 = 14 页脚内容2- 6=
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