ldcf.net
当前位置:首页 >> 125x(20十8)怎样简便运算的 >>

125x(20十8)怎样简便运算的

125x(20十8) =125x20+125x8 =2500+1000 =3500

47X15(20十8)=47X(20X15十8X15)=47X(300十120)=47X420=47X400+47X20=18800+940=19740

28x125-2x125-6x125 =(28-6-2)x125 =20x125 =2500

七十八乘五十六减五十六乘二十八的简便运算 =56x(78-28) =56x50 =50x50+6x50 =2500+300 =2800

你好! 28×38+72×38 =38×(28+72) =38×100 =3800; 希望能帮到你请采纳谢谢!

一百二十五乘以二十五乘以六十四 =125×25×4×8×2 =(125×8)×(25×4)×2 =1000×100×2 =200000

解: 23*11.8+460*0.91 =23*11.8+23*(20*0.91) =23*(11.8+18.2) =23*30 =690

37X(28/36) =36X(28/36)+28/36 =28+7/9 =28又9分之7

99X28+28 =(99+1)X28 =100X28 =2800 竖式见图:

720÷(8×6)=720÷8÷6=90÷6=15

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