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下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7
人气:423 ℃ 时间:2020-06-14 05:27:06
解答
3.28*5.7+6.72*5.7
=(3.28+6.72)*5.7
=10*5.7
=57
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