ldcf.net
当前位置:首页 >> 10.1乘87的简便运算 >>

10.1乘87的简便运算

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

10乘以87+0.1乘以87

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

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

10.1×87 =(10+0.1)x87 =10x87+0.1x87 =870+8.7 =878.7

10×87+0.1×87

10.1x87-8.7 =10.1×87-87×0.1 =87×(10.1-0.1) =8.7×10 =87

解(1)10.1×87,=(10+0.1)×87,=87+8.7,=95.7;(2)2.3+3.19÷(22-19.8),=2.3+3.19÷2.2,=2.3+1.45,=3.75;(3)1.25×7.2,=1.25×8×0.9,=10×0.9,=9.

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

10.87一4.3x0.7 =10.87-3.01 =7.86 直接算最简便

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