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574+196和25×67×125×32的简便计算方法?
人气:292 ℃ 时间:2020-02-04 06:11:40
解答
574+196
=574+200-4
=774-4
=770
25×67×125×32
=25×4×125×8×67
=100×1000×67
=6700000
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