
27点8-10二十七点八减去十二点八与三点二九的和用脱式怎么计算?
1个回答
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27.8-10.2+17.8-12.8+3.29
=27.8+17.8+3.29-10.2-12.8
=27.8+17.8+3.29-23
=45.6+3.29-23
=48.89-23
=25.89
=27.8+17.8+3.29-10.2-12.8
=27.8+17.8+3.29-23
=45.6+3.29-23
=48.89-23
=25.89
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