4.7*8.9+32*0.47-4.7-2.1简便计算
答案:1 悬赏:10 手机版
解决时间 2021-11-17 13:00
- 提问者网友：低吟詩仙的傷
- 2021-11-17 01:15
4.7*8.9+32*0.47-4.7-2.1简便计算
最佳答案
- 五星知识达人网友：骨子里都是戏
- 2021-11-17 01:40
4.7*8.9+32*0.47-4.7*2.1
=4.7*8.9+3.2*4.7-4.7*2.1
=4.7*(8.9+3.2-2.1)
=4.7*10=47追问得数不是50.07追答4.7*8.9+32*0.47-4.7-2.1 = 50.07追问有没简便计算有没简便计算追答4.7*8.9+32*0.47-4.7-2.1
=4.7*8.9+3.2*4.7-4.7-2.1
=4.7*(8.9+3.2-1)-2.1
=4.7*11.1-2.1
=4.7*10+4.7*1+4.7*0.1-2.1
=47+4.7+0.47-2.1
= 50.07
=4.7*8.9+3.2*4.7-4.7*2.1
=4.7*(8.9+3.2-2.1)
=4.7*10=47追问得数不是50.07追答4.7*8.9+32*0.47-4.7-2.1 = 50.07追问有没简便计算有没简便计算追答4.7*8.9+32*0.47-4.7-2.1
=4.7*8.9+3.2*4.7-4.7-2.1
=4.7*(8.9+3.2-1)-2.1
=4.7*11.1-2.1
=4.7*10+4.7*1+4.7*0.1-2.1
=47+4.7+0.47-2.1
= 50.07
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