一年级数学上册第3单元1_5的认识和加减法《减法》同步练习新人教版.doc

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1减法 1看图说一说,填一填。(1)5辆去掉辆,还剩辆。5-=(2)4只去掉只,还剩只。4-=2看图写得数。(1)31(2)42(3)412(4)523照样子画一画,再写得数。2-1=5-2=4-3=3-2=4把得数正确的苹果涂上红色。5看图列式计算。(1)3-=(2)-=(3)-=6用自己的方式表示出下面算式的含义。2+3=5-4=4答案1(1)4 1 4 1 (2)1 3 1 32(1)2 (2)2 (3)3 (4)33画一画略 1 3 1 14涂2 涂2 涂2 涂3 涂3 涂45(1)431 (2)523 (3)51465 1 画图略

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