nynw.net
当前位置:首页 >> 54点九乘以0.38的简便方法怎么算 >>

54点九乘以0.38的简便方法怎么算

54.9*0.38 =54.9*(0.4-0.02) =54.9*0.4-54.9*0.02 =21.96-1.908 =20.862

54.9 × 0.38 =(55-0.1)×(0.4-0.02) =55×0.4 - 55×0.02 - 0.1×0.4 + 0.1×0.02 =22 - 1.1 - 0.04 + 0.002 =22.002 - (1.1+0.04) =22.002 - 1.14 =20.862

3.8*9.9+0.38 =0.38*99+0.38 =0.38*(99+1) =0.38*100 =38

54.9x0.38 =(55-0.1)x0.38 =55x0.38-0.38 =20.9-0.38 =20.52

以前我表姐也是的啊,别总是用一种方法,多选择,中医倒是不错,外用里华士妇方贴,吃饭别吃辣的,对注意

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