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1.2÷0.25怎样写简便计算

1.2÷0.25 =(1.2×4)÷(0.25×4) =4.8÷1 =4.8 你好,本题已解答,如果满意 请点右下角“采纳答案”。

2.1÷0.25=8.4 ~回答完毕~ ~\(^o^)/~祝学习进步~~~

简便算法如下: 方法1: (7.1*4)÷(0.25*4)=28.4÷1=28.4 方法2: 710/25=28.4 简便算法的公式: 1/[n*(n+1)*(n+2)]=(1/n*(n+1)-1/(n+1)(n+2)]/2 1/ (n*(n+1)) = 1/n - 1/(n+1) 涉及简便算法的题目: 1/1×2+1/2×3+1/3×4+····+1/2005×2006 解:...

=0.25×4×0.3—0.25×4×0.7 =0.3—0.7 =—0.4

=(1/2+1.05-1)x0.25 =0.55x0.25 =11/80

1/3+(0.75+0.25÷2/3)的简便算法。 1/3+(0.75+0.25÷2/3) =1/3+3/4+1/4*3/2 =1/3+3/4+3/8 =8/24+18/24+9/24 =35/24

(1)4.9×4+5.1÷0.25 =4.9×4+5.1÷14 =4.9×4+5.1×4=(4.9+5.1)×4=10×4=40(2)5-34+14=5-(34-14)=5-12=412(3)56+(613-16)-613 =(56-16)+(613-613)=23(4)56-18+16=(56+16)-18 =1-18=78

先彩钠如何,我帮你解提这边谢谢。

①2.8÷2分之1×2分之1÷0.7 =(2.8÷0.7)×(1/2÷1/2) =4×1 =4 ②【6分之5+12分之7+8分之3】÷48分之1 =【5/6+7/12+3/8】×48 =5/6×48+7/12×48+3/8×48 =40+28+18 =86 ③【1-4分之3】÷0.25×4 =1/4×4÷0.25 =1÷0.25 =4 ④3.6÷【1.4÷7】-9 =3.6÷0.2-9 =18-9 ...

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