题目内容
【题目】口算
65+37×0= 28×0÷54= 4×28×25= 100×3÷100×3=
25×28= 50﹣25÷5= 2.7×0.03= 2.4÷0.06=
4.2÷3= 1×0.94= 1.2×0.8= 0.39÷1.3=
1﹣= += ﹣= +=
【答案】65,0,2800,9,700,45,0.081,40,1.4,0.94,0.96,0.3,,1,,
【解析】
试题分析:根据整数、分数加减乘除法的计算方法进行解答即可;
4×28×25运用乘法交换律简算.
解:65+37×0=65 28×0÷54=0 4×28×25=2800 100×3÷100×3=9
25×28=700 50﹣25÷5=45 2.7×0.03=0.081 2.4÷0.06=40
4.2÷3=1.4 1×0.94=0.94 1.2×0.8=0.96 0.39÷1.3=0.3
1﹣= +=1 ﹣= +=
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