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0.65+9.9×6.5的简便计算方法

简便计算的过程为: 0.65+10.9×6.5 =6.5×(0.1+10.9) =6.5×11 =7

0.65+9.9×6.5 =6.5*0.1+9.9*6.5 =6.5*(0.1+9.9) =6

你好!这是小数的提取公因式的算法,可以将0.65转换成6.5×0.1。这是最简便算法不用计算式都可以

0.65+10.9×6.5 =0.65+109x0.65 =(1+109)x0.65 =110

0.65+10.9x6.5 =0.65x1+109x0.65 =0.65x(1+109) =0

0.65+19.9×6.5 =0.1×6.5+19.9×6.5 =(0.1+19.9)×6.5 =2

0.65x10.9+6.5 =0.65x10.9+0.65x10 =0.65x(10.9+10) =

0.65+9.9×0.65 =0.65x1+0.65x9.9 =0.65x(1+9.9) =0

6.5×9.9+0.65 =6.5×9.9+6.5×0.1 =6.5×(9.9+0.1) =6

65×9%+0.65×6.4-6.5×0.54 65×0.09+65×0.064-65×0.054

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