五上数学期中小数除法简便运算训练
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简介
1.脱式计算,能简算的要简算。 7.68÷2.5÷0.4 =7.68÷(2.5×0.4) =7.68÷1 =7.68 12.8÷0.4÷0.25 =12.8÷(0.4×0.25) =12.8÷0.1 =128 6.25÷0.25÷4 =6.25÷(0.25×4) =6.25÷1 =6.25 4.8÷0.24÷2 =4.8÷(0.24×2) =4.8÷0.48 =10 (8.1+0.72)÷0.9 =8.1÷0.9+0.72÷0.9 =9+0.8 =9.8 9.48÷0.25÷0.8 =9.48÷(0.25×0.8) =9.48÷0.2 =47.4
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