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72.19+6.48+27.18-1.38-5.48-0.62的简便计算怎么算?
2个回答
展开全部
72.19+6.48+27.18-1.38-5.48-0.62
=72.19+27.18+(6.48-5.48)-(1.38+0.62)
=72.19+27.18+1-2
=100.37-1
=99.37
=72.19+27.18+(6.48-5.48)-(1.38+0.62)
=72.19+27.18+1-2
=100.37-1
=99.37
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