
用简便方法计算.37×0.125×80.4×63×2.5
用简便方法计算.37×0.125×80.4×63×2.5100-63.29-36.710.02×38.7×504.86×9.94.9×1.O2....
用简便方法计算.37×0.125×80.4×63×2.5100-63.29-36.710.02×38.7×504.86×9.94.9×1.O2.
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(1)37×0.125×8, =37×(0.125×8), =37×1, =37; (2)0.4×63×2.5, =(0.4×2.5)×63, =1×63, =63; (3)100-63.29-36.71, =100-(63.29+36.71), =100-100, =0; (4)0.02×38.7×50, =(0.02×50)×38.7, =1×387, =38.7; (5)4.86×9.9, =4.86×(10-0.1), =4.86×10-4.86×0.1, =48.6-0.486, =48.114; (6)4.9×1.O2, =4.9×(1+0.O2), =4.9×1+4.9×0.02, =4.9+0.098, =4.998. |

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