三年级数学下册一《除法》节约课堂作业北师大版.doc

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1节约优秀习题展示1填一填。(1) 要验算除法,可以用( )和( )相乘的方法来验算。(2) 在一个除法算式里,除数是 7,商是 26,被除数是( )。(3) 因为( )除数=商,所以商除数=( )。(4) 被除数是 245,除数是 7,商是( )。2先估算商是几位数,再计算,并验算。(1) 3693= (2)5255=3做一套儿童服装用 3 米布。现在有 135 米布,可以做多少套儿童服装?答案 1(1)除数 商 (2)182 (3)被除数 被除数 (4)352(1)三位数 123 (2)三位数 1053. 1353=45(套)

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