tfsf.net
当前位置:首页>>关于99.99乘0.8加11.11乘2.8的简便运算的资料>>

99.99乘0.8加11.11乘2.8的简便运算

可以利用乘法分配律的逆运算进行简便运算: 99.99*0.8+11.11*2.8 =99.99*0.8+11.11*(2+0.8) =99.99*0.8+11.11*0.8+11.11*2 =(99.99+11.11)*0.8+11.11*2 =111.1*0.8+11.11*2 =11.11*8+11.11*2 =11.11*(8+2) =11.11*10 =111.1 扩展资料:

99.99*0.8+11.11*2.8=11.11*9*0.8+11.11*2.8=11.11*(9*0.8+2.8)=11.11*10=111.1

只要将99.99分解成11.11*9,就能用简便方法计算了.99.99*0.8+11.11*2.8=11.11*9*0.8+11.11*2.8=11.11*7.2+11.11*2.8=11.11*(7.2+2.8)=11.11*10=111.1

99.99*0.8+11.11*2.8=11.11*(9*0.8)+11.11*2.8=11.11*7.2+11.11*2.8=11.11*(7.2+2.8)=11.11*10=111.1

11.11*2.8=(10+1+0.1+0.01)*2.8

99.99x0.8+11.11x2.8=11.11x9x0.8+11.11x2.8=11.11x7.2+11.11x2.8=11.11x(7.2+2.8)=11.11x10=111.1

11.11(9x0.8十1x2.8)=11.11(7.2十2.8)=11.11X10=111.1

=11.11*7.2+11.11*2.8=11.11*10=111.1

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