ldcf.net
当前位置:首页 >> 4/7÷2计算 >>

4/7÷2计算

4/7÷2 =4/7×1/2 =2/7

1-4/7-4/7×1/2 =1-4/7-2/7 =1/7

请问这个怎么算? 2/5x3/7+4/7÷5/2 2/5x3/7+4/7÷5/2 =2/5*3/7+4/7*2/5 =2/5*(3/7+4/7) =2/5

x-2x/7=3/4 x(1-2/7)=3/4 5x/7=3/4 x=3/4X7/5 x=21/20

7/2÷7×4/7 =7/2×1/7×4/7 =1/2×4/7 =2/7

(1) 1/7=0.1428571428571 2/7 = 0.2857142857142 3/7 = 0.4285714285714 4/7 = 0.5714285714285 5/7 = 0.7142857142857 6/7 = 0.857142857142 8 保留了13位有效数字 (2) 5/7 = 0.7142857142857第34位是2 (1) 都是无限循环小数都是小数点后...

1.53÷23.4÷7.2 =153/2340×5/36 =153/16848

3/4÷7/8÷15/14 =3/4*8/7*14/15 =4/5 (4/9+2/15)÷2/15 =4/9*15/2+1 =10/3+1 =4又1/3 3/20÷ 0.2×2/3 =3/20*5*2/3 =1/2

编写一道应用题,解决需要7/4÷1/2的计算 解答: 题目:小明1/2小时骑车形式7/4km,时速多少? 7/4÷1/2 =7/4*2 =7/2

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