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简便算4.6+8.4/2.4 9.9*13.8
人气:173 ℃ 时间:2020-04-09 21:13:13
解答
4.6+8.4/2.4
=4.6+3.5
=8,1
9.9*13.8
=(10-0.1)*13.8
=10*13.8-0.1*13.8
=138-1.38
=136.62
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