49×99+99 的简便算法
答案:6 悬赏:50 手机版
解决时间 2021-02-15 03:22
- 提问者网友:川水往事
- 2021-02-14 23:51
49×99+99 的简便算法
最佳答案
- 五星知识达人网友:狂恋
- 2021-02-15 01:10
1. 49*99+99
=49*100-49*1+99
=4900-49+99
=4900+50
=4950
2. 49*99+99
=49*100+50
=4900+50
=4950
=49*100-49*1+99
=4900-49+99
=4900+50
=4950
2. 49*99+99
=49*100+50
=4900+50
=4950
全部回答
- 1楼网友:笑迎怀羞
- 2021-02-15 04:37
=49*99+1*99
=(49+1)*99
=50*99
=50*(100-1)
=5000-50
=4950
=(49+1)*99
=50*99
=50*(100-1)
=5000-50
=4950
- 2楼网友:等灯
- 2021-02-15 04:23
49×99+99 的简便算法
49×99+99
=(49+1)×99
=50×99
=4950
49×99+99
=(49+1)×99
=50×99
=4950
- 3楼网友:天凉才是好个秋
- 2021-02-15 03:14
49*99+1*99=(49+1)*99=4950
- 4楼网友:春色三分
- 2021-02-15 02:18
=99*(49+1)
=99*50=4950
=99*50=4950
- 5楼网友:低血压的长颈鹿
- 2021-02-15 01:55
=(49+1)×99
=50×99
=50×100-50
=5000-50
=4950
=50×99
=50×100-50
=5000-50
=4950
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