ldcf.net
当前位置:首页 >> 7.6/1.9*7.6/1.9简便算法 >>

7.6/1.9*7.6/1.9简便算法

9/8-1/7+1/8-6/7=(9/8+1/8)-(1/7+6/7)=10/8-1=5/4-1=1/4。 使用结合律。

76×1.9+7.6×81的简便算法 76×1.9+7.6×81 =7.6*19+7.6*81 =7.6*(19+81) =7.6*100 =760

解:根据提取公因式的简便方法, 原式=4/7x6/9+4/7x1/9 =4/7x(6/9+1/9) =4/7x7/9 =4/9

简算方法 6.175÷1.9 =(5.7+0.38+0.95)÷1.9 =5.7÷1.9+0.38÷1.9+0.095÷1.9 =3+0.2+0.05 =3.25

不好意思,搞错了!:)

7.6÷5.4÷1.9×5.4 5。4先约去 7.6÷1.9=4 希望对你有帮助O(∩_∩)O~

5/1x6/1+6/1x7/1+7/1x8/1+8/1x9/1+9/1x10/1 =5X6+6X7+7X8+8X9+9X10 =6X12+7X8+9X18 =6X(12+27)+7X8 =6X39+7X8 =234+56 =290

1×1/3)+3×1/5)+5×1/7加7×1/9简便算法计算 1×1/3)+3×1/5)+5×1/7加7×1/9 =1/2*(1-1/3+1/3-1/5+1/5-1/7+1/7-1/9) =1/2*8/9 =4/9

7/6x(7+9)x1/18 =7/6x16x1/18 =7/6x4x4x1/18 =14/3x2/9 =28/27

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com