一年级数学下册第2单元《20以内的退位减法》同步习题新人教版.doc

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120 以内的退位减法1看谁算得又对又快。 978916791452花骨朵是几呢?3把得数填入相应的空白处。4我会计算。1796 1295 1597 5891994 8395、落谁家?1799 891721395 79151195 1495 6你会填吗?如果18,15,13,那么( ),( ),( )。7、小蜜蜂应该采哪朵花?把它涂上红色8、看图列式计算 (1) (2)参考答案1、8 9 7 9 5 9 2、4 9 5 7 3 6 83、12 13 14 15 16 17 3 8 4 6 7 54、2 8 13 4 6 25、 36、9 6 77、7 13 8 6 解析:考察混合运算能力。8、(1)1679 解析:考察 20 以内减法。(2)1789 解析:考察 20 以内减法。

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