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(2.68-0.48)×6.5的简便计算怎样算
人气:404 ℃ 时间:2020-03-23 03:25:38
解答
(2.68-0.48)×6.5
=2.2×6.5
=2×6.5+0.2×6.5
=13+1.3
=14.3
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