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4.5乘以0.002

4.5x0.002= 4.5 x0.002-----------0.009理解:先4.5x2再缩小10009缩小1000=0.009

小学四年级数学用乘法验算4.5乘以0.002=0.009验算:0.009÷0.002=4.5或:0.002*4.5=0.009

4.5*0.002=0.009.请采纳,谢谢.

和加法竖式计算很像,只不过要把4.5写在上面,小数末尾5和2对齐,在0.002左面空一格写乘号X,下面划横线,得出结果点去四个小数点.

4.25乘0.002 乘法验算4.25*0.002=0.0085验算:0.0085÷0.002=4.25或:4.25÷0.0085=0.002

分开来算,4.5乘以4.5.然后再用结果乘以0.002

0.009

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