脱式计算(能简便的要简便).8.8×12.5×0.70.64-查字典问答网
分类选择

来自罗通云的问题

  脱式计算(能简便的要简便).8.8×12.5×0.70.64×0.25×1.25×506.42×13.51+13.51×3.586.75×87.12-77.12×6.7516-3.12×1.512.8+7.2×0.38.15×(12.75-8.95)5.62×3.1-2.1×1.385.23×0.76+52.3×0.02496.51×3.1+3.1×4.59-3.1.

  脱式计算(能简便的要简便).

  8.8×12.5×0.70.64×0.25×1.25×506.42×13.51+13.51×3.586.75×87.12-77.12×6.7516-3.12×1.512.8+7.2×0.38.15×(12.75-8.95)5.62×3.1-2.1×1.385.23×0.76+52.3×0.02496.51×3.1+3.1×4.59-3.1.

1回答
2019-11-14 07:42
我要回答
请先登录
刘立恒

  (1)8.8×12.5×0.7

  =1.1×8×12.5×0.7

  =(1.1×0.7)×(8×12.5)

  =0.77×100

  =77;

  (2)0.64×0.25×1.25×50

  =0.8×0.8×0.25×1.25×50

  =(0.8×1.25)×(0.8×0.25×50)

  =1×10

  =10;

  (3)6.42×13.51+13.51×3.58

  =(6.42+3.58)×13.51

  =10×13.51

  =135.1;

  (4)6.75×87.12-77.12×6.75

  =(87.12-77.12)×6.75

  =10×6.75

  =67.5;

  (5)16-3.12×1.5

  =16-4.68

  =11.32;

  (6)12.8+7.2×0.3

  =12.8+2.16

  =14.96;

  (7)8.15×(12.75-8.95)

  =8.15×3.8

  =30.97;

  (8)5.62×3.1-2.1×1.38

  =17.422-2.898

  =14.524;

  (9)5.23×0.76+52.3×0.024

  =5.23×0.76+5.23×0.24

  =5.23×(0.76+0.24)

  =5.23×1

  =5.23;

  (10)96.51×3.1+3.1×4.59-3.1

  =(96.51+4.59-1)×3.1

  =100.1×3.1

  =(100+0.1)×3.1

  =100×3.1+0.1×3.1

  =310+0.31

  =310.31.

2019-11-14 07:45:50

最新问答

推荐文章

猜你喜欢

附近的人在看

推荐阅读

拓展阅读

  • 大家都在看
  • 小编推荐
  • 猜你喜欢
  •