0.61*0.25+0.18*1/4+0.21*百分之二十五简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 20:45:03
![0.61*0.25+0.18*1/4+0.21*百分之二十五简便计算](/uploads/image/z/201264-24-4.jpg?t=0.61%2A0.25%2B0.18%2A1%2F4%2B0.21%2A%E7%99%BE%E5%88%86%E4%B9%8B%E4%BA%8C%E5%8D%81%E4%BA%94%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
0.61*0.25+0.18*1/4+0.21*百分之二十五简便计算
0.61*0.25+0.18*1/4+0.21*百分之二十五简便计算
0.61*0.25+0.18*1/4+0.21*百分之二十五简便计算
0.61×0.25+0.18×1/4+0.21×25%
=0.61×0.25+0.18×0.25+0.21×0.25
=(0.61+0.18+0.21)×0.25
=1×0.25
=0.25
0.25*(0.61+0.18+0.21)
=0.25*(0.61+0.39)
=0.25
0.25=1/4=25%
0.61*0.25+0.18*1/4+0.21*百分之二十五
=0.61*0.25+0.18*0.25+0.21*0.25
=0.25*(0.61+0.18+0.21)
接下来自己算,很容易的