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0.36X5.4简便方法

0.36X5.4简便方法 =0.36×(5+0.4) =0.36×5+0.36×0.4 =1.75+0.144 =1.894

0.36×5+9.6÷3.2 =1.8+3 =4.8

8X-3X=105 解:(8-3)x=105 5X÷5=105÷5 X=21

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