ppts.net
当前位置:首页>>关于1点87乘9点9加0点187怎样简便计算的资料>>

1点87乘9点9加0点187怎样简便计算

1.87×9.9+0.187 =1.87×9.9+1.87×0.1 =1.87×(9.9+0.1) =1.87×10 =18.7

187一(87十15) =187-87-15 =100-15 =85 行家正解,不明白可以追问!祝您学习进步 满意请点击下面的【选为满意回答】按钮,O(∩_∩)O谢谢

87×99+87 =87×(99+1) =87×100 =8700

99乘以87加77乘以9加33乘以18 =99×87+7×99+99×6 =99×(87+7+6) =99×100 =9900

125×8×87 =1000×87 =87000

187-(87+22) =187-87-22 =100-22 =78

乘法分配律 307×87+307×14-307 =307×(87+14-1) =307×100 =30700

187×85-87×85 =85×(187-87) =85×100 =8500

4.2*99.9 + 0.87*999 - 2.9*99.9 =(4.2+8.7 - 2.9)*99.9 =(12.9 - 2.9)*99.9 =10*99.9 =999

10.1×87 =(10+0.1)×87 =10×87+0.1×87 =870+8.7 =878.7

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