ldcf.net
当前位置:首页 >> 9000➗72怎么用递等式巧算? >>

9000➗72怎么用递等式巧算?

列式为: 5400➗72 =5400➗(9x8) =5400➗9➗8 =600➗8 =75

72➗4.8 =72➗(6×0.8) =72➗6➗0.8 =12➗0.8 =15

12.6x7.6x2.32➗1.9➗1.4➗2.9如何用简便计算? 12.6x7.6x2.32➗1.9➗1.4➗2.9 =(12.6÷4)*(7.6÷1.9)*(2.32÷2.9) =3.15*4*0.8 =10.08

600➗15+600➗5用简便方法计算 600➗15+600➗5 =40+120 =160 直接计算

3.38÷18=0.187(7上面点个点,表示7循环) 2.3÷99=0.023(23上面点个点,表示23循环) 47 ÷ 22 = 2.136(36上面点个点,表示36循环) 竖式见图:

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