18.4/4 5.3*2.5 7.13*7.5简便方法
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解决时间 2021-11-10 23:30
- 提问者网友:心牵心
- 2021-11-10 13:47
18.4/4 5.3*2.5 7.13*7.5简便方法
最佳答案
- 五星知识达人网友:渊鱼
- 2021-11-10 14:43
18.4/4 +5.3*2.5 +7.13*7.5
=18.4/4+5.3*2.5 +5.3*7.5+1.83*7.5
=18.3/4+0.1/4+5.3(2.5+7.5)+18.3*0.75
=18.3*0.25+18.3*0.75+0.1/4+53
=18.3+53+0.025
=71.325
=18.4/4+5.3*2.5 +5.3*7.5+1.83*7.5
=18.3/4+0.1/4+5.3(2.5+7.5)+18.3*0.75
=18.3*0.25+18.3*0.75+0.1/4+53
=18.3+53+0.025
=71.325
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