ntxp.net
当前位置:首页 >> 3.52 2.5 0.4简便方法 >>

3.52 2.5 0.4简便方法

3.52+2.5+0.4=3+0.52+2+0.5+0.4 =(3+2)+(0.52+0.5+0.4)=3+1.42=4.42

后面的可以变为2.5x0.4=1,所以原式=3,52/1=3.52

3.52÷2.5÷0.4=3.52÷(2.5*0.4)=3.52÷1=3.52

3.52-25/4=3.52-6.25=-2.73

先用2.5乘0.4等于1,再用73.2除1等于73.2

(31.6-11.7)÷2.5÷0.4=(31.6-11.7)÷(2.5*0.4)……根据除法的性质=(31.6-11-0.7)÷1……根据减法的性质=20.6-0.7=20.6-1+0.3=19.6+0.3=19.9

2.5*0.4/2.5*0.4=2.5/2.5*0.4*0.4=1*0.4*0.4=0.16

8.54÷2.5÷0.4=8.54÷(2.5*0.4)=8.54÷1=8.54

=4.78*(2.5*0.4)=4.78*1=4.78

=2.79*(2.5*0.4)=2.79*1=2.79

ndxg.net | 9647.net | rtmj.net | tuchengsm.com | sgdd.net | 网站首页 | 网站地图
All rights reserved Powered by www.ntxp.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com