下面各题,怎样算简便就怎样算. 37×8+63×8 &nb...
答案:1 悬赏:10 手机版
解决时间 2021-11-28 00:13
- 提问者网友:星軌
- 2021-11-27 01:02
下面各题,怎样算简便就怎样算. 37×8+63×8 &nb...
最佳答案
- 五星知识达人网友:你哪知我潦倒为你
- 2021-11-27 01:56
(1)37×8+63×8
=(37+63)×8
=100×8
=800;
(2)44×25
=11×(4×25)
=11×100
=1100;
(3)45×99
=45×100-45×1
=4500-45
=4455;
(4)99×48+48
=(99+1)×48
=100×48
=4800;
(5)(20+4)×25
=20×25+4×25
=500+100
=600;
(6)36×127-27×36
=36×(127-27)
=36×100
=3600;
(7)[548-(124+215)]×27
=[548-339]×27
=209×27
=5643.
=(37+63)×8
=100×8
=800;
(2)44×25
=11×(4×25)
=11×100
=1100;
(3)45×99
=45×100-45×1
=4500-45
=4455;
(4)99×48+48
=(99+1)×48
=100×48
=4800;
(5)(20+4)×25
=20×25+4×25
=500+100
=600;
(6)36×127-27×36
=36×(127-27)
=36×100
=3600;
(7)[548-(124+215)]×27
=[548-339]×27
=209×27
=5643.
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