2 0 以内退位减法（一） 班级 学号 姓名 时间 2 0 — 6 = 1 4 — 6 = 2 0 — 1 5 = 1 3 — 9 = 1 5 — 6 = 1 3 — 6 = 1 1 — 7 = 1 6 — 7 = 1 3 — 7 = 1 4 — 5 = 1 5 — 8 = 1 0 — 9 = 1 2 — 6 = 2 0 — 1 8 = 1 3 — 9 = 1 3 — 7 = 2 0 — 1 6 = 1 1 — 3 = 1 3 — 4 = 1 0 — 1 = 1 2 — 8 = 1 2 — 7 = 1 0 — 2 = 2 0 — 5 = 1 2 — 9 = 1 5 — 7 = 1 4 — 6 = 1 4 — 6 = 1 0 — 1 = 2 0 — 5 = 1 3 — 7 = 2 0 — 5 = 1 2 — 8 = 2 0 — 1 4 = 1 6 — 7 = 2 0 — 6 = 1 8 — 9 = 2 0 — 1 3 = 1 4 — 8 = 1 3 — 5 = 1 2 — 6 = 1 3 — 7 = 1 3 — 9 = 1 8 — 9 = 1 7 — 9 = 2 0 — 8 = 1 5 — 7 = 2 0 — 1 4 = 1 3 — 7 = 1 0 — 3 = 2 0 以内退位减法（一） 班级 ___________ 学号 ____________ 姓名 _____________ 时间 __________ 2 0 — 6 = 1 4 — 6 = 2 0 — 1 5 = 1 3 — 9 = 1 5 — 6 = 1 3 — 6 = 1 1 — 7 = 1 6 — 7 = 1 3 — 7 = 1 4 — 5 = 1 5 — 8 = 1 0 — 9 = 1 2 — 6 = 2 0 — 1 8 = 1 3 — 9 = 1 3 — 7 = 2 0 — 1 6 = 1 1 — 3 = 1 3 — 4 = 1 0 — 1 = 1 2 — 8 = 1 2 — 7 = 1 0 — 2 = 2 0 — 5 = 1 2 — 9 = 1 5 — 7 = 1 4 — 6 = 1 4 — 6 = 1 0 — 1 = 2 0 — 5 = 1 3 — 7 = 2 0 — 5 = 1 2 — 8 = 2 0 — 1 4 = 1 6 — 7 = 2 0 — 6 = 1 8 — 9 = 2 0 — 1 3 = 1 4 — 8 = 1 3 — 5 = 1 2 — 6 = 1 3 — 7 = 1 3 — 9 = 1 8 — 9 = 1 7 — 9 = 2 0 — 8 = 1 5 — 7 = 2 0 — 1 4 = 1 3 — 7 = 1 0 — 3 = 2 0 以内退位减法（二） 班级 学号 姓名 时间 1 5 -8 = 1 4 -5 = 1 3 - 7 = 1 0 -3 = 2 0 - 6 = 1 4 -8 = 1 1 -9 = 2 0 - 1 3 = 1 7 -8 = 1 3 - 7 = 1 6 -9 = 1 ...
