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脱式计算;1乘1/100除以1/2000乘1/10 = = = = ??...

1乘1/100除以1/2000乘1/10 =1*1/100*2000*10 =1/10*2000 =200

-100乘以25分之一除以25乘以0.5--10 =-4×1/25×1/2-10 =-2/25-10 =-10又2/25

1/2 x2/3 x......100/101 =1/101 说明: 前面的分母与后面的分子相约

8.5X100.1 =8.5X(100+0.1) =8.5X100+8.5X0.1 =850+0.85 =850.85

100×(1+20%)脱式计算 解:100×(1+20%) =100X1.2 =120.

26.8×100.1 =26.8×(100+0.1) =26.8×100+26.8×0.1 =2680+2.68 =2682.68

3.14×20×100×1/3+3.14×100×30 =3.14×100×(20×1/3+30) =314×110/3 =11513又3分之1

1/2 x2/3 x......100/101 =1/101 说明: 前面的分母与后面的分子相约 亲,不懂请追问,满意请采纳,谢谢你!

十三分之九除以一百加一百分之一乘十三分之四脱式计算 解: 9/13÷100+1/100×4/13 =9/13×1/100+1/100×4/13 =(9/13+4/13)×1/00 =1×1/100 =1/100

36×101 =36×(100+1) =36×100+36 =3600+36 =3636

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