简便方法计算：7.5×2.7+1.9×2.5
答案:5 悬赏:80 手机版
解决时间 2021-11-08 09:22
- 提问者网友：蓝莓格格巫
- 2021-11-07 12:12
简便方法计算：7.5×2.7+1.9×2.5
最佳答案
- 五星知识达人网友：第四晚心情
- 2021-11-07 12:50
解：7.5*2.7+1.9*2.5
=2.5*3*2.7+1.9*2.5
=（8.1+1.9）*2.5
=25
=2.5*3*2.7+1.9*2.5
=（8.1+1.9）*2.5
=25
全部回答
- 1楼网友：怙棘
- 2021-11-07 14:48
7.5*2.7+2.5*(2.7-1.2)
=7.5*2.7+2.5*2.7-2.5*1.2
=2.7*(7.5+2.5)-2.5*0.4*3
=27+3
=30
希望能帮助您
=7.5*2.7+2.5*2.7-2.5*1.2
=2.7*(7.5+2.5)-2.5*0.4*3
=27+3
=30
希望能帮助您
- 2楼网友：走死在岁月里
- 2021-11-07 14:37
7.5*2.7+1.9*2.5
=2.5*3*2.7+1.9*2.5
=2.5*8.1+1.9*2.5
=2.5*（8.1+1.9）
=2.5*10
=25
=2.5*3*2.7+1.9*2.5
=2.5*8.1+1.9*2.5
=2.5*（8.1+1.9）
=2.5*10
=25
- 3楼网友：话散在刀尖上
- 2021-11-07 14:20
7.5×2.7+1.9×2.5
=(10-2.5)×2.7+1.9×2.5
=10×2.7-2.5×2.7+1.9×2.5
=27-(2.7-1.9)×2.5
=27-0.8×2.5
=27-2
=25
=(10-2.5)×2.7+1.9×2.5
=10×2.7-2.5×2.7+1.9×2.5
=27-(2.7-1.9)×2.5
=27-0.8×2.5
=27-2
=25
- 4楼网友：空山清雨
- 2021-11-07 13:50
7.5×2.7+1.9×2.5
=(10-2.5)×2.7+1.9×2.5
=10×2.7-2.5×2.7+1.9×2.5
=27-(2.7-1.9)×2.5
=27-0.8×2.5
=27-2
=25
=(10-2.5)×2.7+1.9×2.5
=10×2.7-2.5×2.7+1.9×2.5
=27-(2.7-1.9)×2.5
=27-0.8×2.5
=27-2
=25
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯