2.54➖0.27+(1.46+1.73)用简便计算怎么算?
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2.54-0.27+(1.46+1.73)
=2.54-0.27+1.46+1.73
=2.54+1.46+1.73-0.27
=4+1.73-0.27
=5.73-0.27
=5.46
=2.54-0.27+1.46+1.73
=2.54+1.46+1.73-0.27
=4+1.73-0.27
=5.73-0.27
=5.46
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展开全部
2.54-0.27+(1.46+1.73)
=2.54-0.27+1.46+1.73
=2.54+1.46-0.27+1.73
=4-0.27+1.73
=3.73+1.73
=5.46
=2.54-0.27+1.46+1.73
=2.54+1.46-0.27+1.73
=4-0.27+1.73
=3.73+1.73
=5.46
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