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56乘10.1用简便的方法计算

56*10.1 =56*(10+0.1) =560+5.6 =565.6

0.56×(10+0.1)=5.6+0.056=5.656

65×10.1 =65×10+65×0.1 =650+6.5 =656.5

54×10.1 =54×(10+0.1) =54×10+54×0.1 =540+5.4 =545.4

63×(10+0.1)=63×10+63×0.1=636.3

0.56=5.6*0.1 所以 原式=5.6*10.1-5.6*0.1 =5.6*(10.1-0.1) =5.6*10=56

6.7×10.1 =6.7×10+6.7×0.1 =67+0.67 =67.67

8.6×10.1=8.6×(10+0.1)=8.6×10+8.6×0.1=86+0.86=86.86。

怎么用简便方法 5.6×10.1-0.56 =0.56×101-0.56 =0.56×(101-1) =0.56×100 =56

原式 =36x(10+0.1) =36x10+36x0.1 =360+3.6 =363.6

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