20以内退位减法练习题 姓名____
破十法口诀:看大数,分出10;减小数,加剩数。
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=
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