ldcf.net
当前位置:首页 >> 2/5×括号1/5+8/21÷(4/7)括号脱式计算 >>

2/5×括号1/5+8/21÷(4/7)括号脱式计算

2/5×[1/5+8/21÷(4/7)] =2/5x(1/5+2/3) =2/5x(13/15) =26/75

楼主您好 脱式计算,即递等式计算,把计算过程完整写出来的运算,也就是脱离竖式的计算。在计算混合运算时,通常是一步计算一个算式(逐步计算,等号不能写在原式上),要写出每一步的过程。一般来说,等号要往前,不与第一行对齐。也就是离开原...

列式计算为 7.2÷0.4-1.2×5 =18-6 =12 所以原式的计算结果为12.

2/7+5/14+1/2 =4/14+5/14+7/14 =(4+5+7)/14 =16/14 =8/7

1/2 2/3×括号3/4-1/6括号除以7/9脱式计算 解: 1/2+ 2/3×(3/4-1/6)除以7/9 =1/2+2/3×7/12÷7/9 =1/2+1/2 =1

80%×3/7+0.8×2/7-4/5×1/7 =0.8x3/7+0.8x2/7-0.8x1/7 =0.8x(3/7+2/7-1/7) =0.8x4/7 =4/5x(4/7) =16/35

1. 1/8*14/8/7 =7/4/8/7 =7/4*7/8 =49/*32 2. 9/14/(6/5-3/4)*7/24 =9/14/9/20*7/24 =9/14*20/9*7/24 =20/14*7/24 =5/12 第三小题题目再发准确点行吗

5/7+1/4-19/14脱式计算 =20/28+7/28-38/28 =27/28-38/28 =-11/28

脱式计算 (3/4+1/6)*2/3 =3/4*2/3+1/6*2/3 =1/2+1/9 =11/18 25*1/5-5*1/5 =5-1 =4 6/11*7/15*10 =84/33 =28/11 (1/7+1/4)*28 =1/7*28+1/4*28 =4+7 =11 (21+2/5)*5/7 =21*5/7+2/5*5/7 =15+2/7 =15又2/7 39*7/13*2/3 =14

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