4.7x99 3.14x102 3.8x10.1-0.38
答案:1 悬赏:50 手机版
解决时间 2021-01-22 15:40
- 提问者网友:謫仙
- 2021-01-22 06:00
4.7x99 3.14x102 3.8x10.1-0.38
最佳答案
- 五星知识达人网友:duile
- 2021-01-22 06:31
4.7x99
=4.7*(100-1)
=470-4.7
=462.3
3.14x102
=3.14*(100+2)
=314+6.28
=320.28
3.8x10.1-0.38
=0.38*(101-1)
=38
(2.5-0.25)x4
=2.5*4-0.25*4
=10-1
=9
4.6x20.1
=4.6*(20+0.1)
=92+0.46
=92.46
24.8-4.8x0.5
=20+4.8-4.8*0.5
=20+4.8*(1-0.5)
=20+2.4
=22.4
=4.7*(100-1)
=470-4.7
=462.3
3.14x102
=3.14*(100+2)
=314+6.28
=320.28
3.8x10.1-0.38
=0.38*(101-1)
=38
(2.5-0.25)x4
=2.5*4-0.25*4
=10-1
=9
4.6x20.1
=4.6*(20+0.1)
=92+0.46
=92.46
24.8-4.8x0.5
=20+4.8-4.8*0.5
=20+4.8*(1-0.5)
=20+2.4
=22.4
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