4.8x8.63x5.2+0.37的简便
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解决时间 2021-03-26 22:24
- 提问者网友:献世佛
- 2021-03-26 00:53
4.8x8.63x5.2+0.37的简便
最佳答案
- 五星知识达人网友:一秋
- 2021-03-26 01:59
4.8x8.63x5.2+0.37
=8.63x4.8x5.2+0.37
=8.63x(5-0.2)x(5+0.2)+0.37
=8.63x(25-0.04)+0.37
=8.63x25-8.63x0.04+0.37
=8.6x25+0.03x25-8.63x0.04+0.37
=43x5+0.75-8.63x0.04+0.37
=215+0.75+0.25+0.12-8.63x0.04
=216.12-8.63x0.04
=215.7748
=8.63x4.8x5.2+0.37
=8.63x(5-0.2)x(5+0.2)+0.37
=8.63x(25-0.04)+0.37
=8.63x25-8.63x0.04+0.37
=8.6x25+0.03x25-8.63x0.04+0.37
=43x5+0.75-8.63x0.04+0.37
=215+0.75+0.25+0.12-8.63x0.04
=216.12-8.63x0.04
=215.7748
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