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2.02X8.5怎样简便计算

2.02×8.5=(2+0.02)×8.5=2×8.5+2×8.5÷100=17+17÷100=17+0.17=17.17 简便计算是一种特殊的计算,它运用了运算定律与数字的基本性质,从而使计算简便,使一个很复杂的式子变得很容易计算出得数。 (1)乘法分配律: 简便计算中最常用的方法是乘法分...

2.02x8.5 =(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17

解:采用分配律, 原式=2.02x8.5 =(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17

2.02X8.5怎样简便怎样算 =(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17

2.2x8.5的简便脱试计算 =2.2*(8+0.5) =2.2*8+2.2*0.5 =17.6+1.1 =18.7

原式 =(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17 或者 =2.02×5×1.7 =10.1×1.7 =(10+0.1)×1.7 =10x1.7+0.1x1.7 =17+0.17 =17.17 供参考。

2.02X8.5 =1.01×2×8.5 =1.01×17 =(1+0.01)×17 =17+0.17 =17.17

(2+0.02)×8.5 =17+0.17 =17.17

=2.02乘(8+0.5) =2.02乘8+2.02乘0.5 =16.16+1.01 =17.17

=(2+0.02)x8.5 =2x8.5+0.02x8.5 =17+0.17 =17.17

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