www.qcfz.net > 0.9x÷13.5=0.2

0.9x÷13.5=0.2

13.9x5.2-3.9x5.2 =(13.9-3.9)×5.2 =10×5.2 =52 1.25x48x0.9 =1.25×8×6×0.9 =(1.25×8)×(6×0.9) =10×5.4 =54

网站地图

All rights reserved Powered by www.qcfz.net

copyright ©right 2010-2021。
www.qcfz.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com