xcxd.net
当前位置:首页 >> 89+276+135+33的简便运算 >>

89+276+135+33的简便运算

89+276+135+33的简便运算 89+276+135+33 =(89+11)+(275+135)+(1+22) =100+410+23 =533

原式 =(90-1)+(275+1)+135+33 =90+275+135+33+1-1 =90+(275+135)+33 =90+410+33 =500+33 =533 简算一般会使用分配率进行数的代换,要善于找到能够代换的数,这个是突破口。

75*89+25*33 =75*89+25*3*11 =75*89+75*11 =75*(89+11) =75*100 =7500

165-89-111+135 =165+135-(89+111) =300-200 =100

解: 89*33十3*11 =89*33+33 =(89+1)*33 =90*33 =2970

=276+135+89+33 =411+89+33 =500+33 =533

67*89+33*89 =(67+33)*89 =100*89 =8900

27+(89+73) =27+73+89 =100+89 =189

=(369+631)+89 =1000+89 =1089

(89+11)+(124+26)+48

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