一年级数学上册第3单元1_5的认识和加减法《减法》同步作业新人教版.doc

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1减法 1看图填一填。3+=5-=2+=4-=2填一填,照样子列算式计算。23填一填。 123=15234快乐连线。5看图写算式。36仔细看图,你能写出几道算式?7哪一边的小猫剩下的鱼多?在它的下面画“” 。4答案11 4 2 3 3 5 1 323 3 3 413(或431) 4 224 5 325(或235)33 4 5 4 3 245415 235 413 5326答案不唯一,如213 415 224 3257左边的小猫

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