(简单版)小数乘除法的简便计算

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1、小数乘法的简便计算例1：用简便方法计算下面各题：12.5×（2.1×8）1.25×32×2.5练习：用简便方法计算下列各题：4×4.7×2.53.5×2.5×81.25×64×0.5×2.51.25×56×0.5×2例2：超市巧克力特价！每千克14.5元。乐乐买了0.27千克，欢欢买了0.73千克。他们一共要付多少元呢？练习，简便方法计算：.9×7.5-6.9×3.592.5×12.5－12.5×12.541.5×7.2＋2.8×41.523.7×32.8-13.8×23.7+23.74/4例3：37.8×9.9＋3.78练习：用简便方法计算下列各题：1.35×3.

2、5＋13.5×0.657.5×2.3+0.25×23例4：8.3×10.16.4×9.9练习：用简便方法计算下列各题：0.85×199100.1×5.41.用简便方法计算。2.4×1.250.125×0.36×82.7×301-2.74.2×29+2.1×27.5×9.9（2.5-0.25）×0.42.用简便方法计算。84.7×2-54.70.125×0.25×0.5×642.8×125+28×12.55.8×（3.87-0.13）+4.2×3.7415.6×98+31.24/4小数除法的简便计算【例1】1.28÷0.25÷41.8÷1.25÷0.8【例2】4.35

3、×27.3+43.5×6.26+0.435×101【例3】50.3÷0.26×9.4×26÷0.94【例4】1.7÷0.8+1.9÷0.8+2.1÷0.8+2.3÷0.8变式练习（8.8×3.2×9.6）÷（1.6×4.4×3.2）1.用简便方法计算7272.72÷0.9÷0.88.25÷0.1255×2.6+1.7×26+80×0.264/46.5÷0.2537.6÷4÷2.5235×12.1+235×42.2-135×54.3（0.2-0.2×0.2）÷0.2（64×75×81）÷（32×25×27）（1.7×2.5×4.2）÷（0.5×0.7×3.4）2.用简

4、便方法计算。（9.1×4.8×7.5）÷（2.5×1.3×1.6）3.85×4.8+63.5×0.48-48×0.023.用简便方法计算。3.5÷0.6+4.5÷0.6+6.7÷0.6+3.3÷0.64.92×0.59+0.41×1.59-0.333×5.93.27÷46.8×5.59÷32.7×4.68÷55.912÷0.7＋14÷0.7＋15÷0.7＋32÷0.7＋11÷0.74/4