0.54＋99×0.99＋0.45怎么简便
答案:6 悬赏:80 手机版
解决时间 2021-12-01 12:50
- 提问者网友：謫仙
- 2021-12-01 08:42
0.54＋99×0.99＋0.45怎么简便
最佳答案
- 五星知识达人网友：玩世
- 2021-12-01 08:49
0.54＋99×0.99＋0.45怎么简便
=0.54+0.45+99x0.99
=0.99+99x0.99
=0.99x(1+99)
=0.99x100
=99
=0.54+0.45+99x0.99
=0.99+99x0.99
=0.99x(1+99)
=0.99x100
=99
全部回答
- 1楼网友：夜风逐马
- 2021-12-01 13:52
利用乘法分配律，凑整简便计算。
0.54+99×0.99+0.45
=99×0.99+(0.54+0.45)
=99×0.99+0.99
=99×0.99+1×0.99
=(99+1)×0.99
=100×0.99
=99
0.54+99×0.99+0.45
=99×0.99+(0.54+0.45)
=99×0.99+0.99
=99×0.99+1×0.99
=(99+1)×0.99
=100×0.99
=99
- 2楼网友：老鼠爱大米
- 2021-12-01 13:12
=0.54＋（100-1）×0.99＋0.45
=0.54+100×0.99-1×0.99+0.45
=0.54+99-0.99+0.45
=0.54+0.45-0.99+99
=0.99-0.99+99
=0+99
=99
望采纳 ，点击采纳
=0.54+100×0.99-1×0.99+0.45
=0.54+99-0.99+0.45
=0.54+0.45-0.99+99
=0.99-0.99+99
=0+99
=99
望采纳 ，点击采纳
- 3楼网友：平生事
- 2021-12-01 11:50
图
- 4楼网友：行路难
- 2021-12-01 10:54
0.54+99×0.99+045
=（0.54+0.45）+99×0.99
=0.99+99×0.99
=0.99×（1+99）
=0.99×100
=99
=（0.54+0.45）+99×0.99
=0.99+99×0.99
=0.99×（1+99）
=0.99×100
=99
- 5楼网友：污到你湿
- 2021-12-01 09:51
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