ldcf.net
当前位置:首页 >> "18+(18×20%2.5)÷25"简便 >>

"18+(18×20%2.5)÷25"简便

18+(18×20-2.5)÷25 =18+(360-2.5)÷25 =18+357.5÷25 =18+14.3 =32.3

(1)原式=13.94+0.5-2.4 =12.04 (2)原式=0.125×8×4×25 =100 (3)原式=2.5+3.91÷1.7 =2.5+2.3 =4.8 (4)原式=4.5×[14.2+6.2] =4.5×20.4 =4.5×(20+0.4) =91.8

(1)2.6×1.9÷2.6×1.9=(2.6÷2.6)×(1.9×1.9)=1×3.61=3.61(2)4.264÷(0.16×20.5)=4.264÷3.28=1.3(3)12×2.5+0.8×2.5=3×(4×2.5)+0.8×2.5=3×10+0.8×2.5=30+2=32(4)3.75÷0.25÷0.4=3.75÷(0.25×0.4)=3.75÷0.1=37.5(5)30-[5.5+18÷(5.2+...

几年级

2.5+3.91÷(20一18.3) =2.5+3.91÷1.7 =2.5+2.3 =4.8

本题 1000x1.25÷50=25元 ,1000x1.25÷500=2.5 元 。 一个2.5kg一件装10个要500个50件1吨250公斤,1吨运费1千,每件运费25元,单价含运2.5元 。

S梯形=1/2(上底+下底)×高 =1/2(2.5+X)×1 =(5/4+X/2)平方分米。

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