五年级用简便方法计算8.4*0.26+1.816

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五年级用简便方法计算8.4*0.26+1.816五年级用简便方法计算8.4*0.26+1.816五年级用简便方法计算8.4*0.26+1.8168.4*0.26+1.816=8.4×(0.25+0.0

五年级用简便方法计算8.4*0.26+1.816
五年级用简便方法计算8.4*0.26+1.816

五年级用简便方法计算8.4*0.26+1.816
8.4*0.26+1.816 =8.4×(0.25+0.01)+1.816 =8.4×0.25+8.4×0.01+1.816 =2.1×4×0.25+0.084+1.816 =2.1×(4×0.25)+(0.084+1.816) =2.1×1+1.9 =2.1+1.9 =4