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脱式计算99×334+222×33×9 和 125×24
人气:206 ℃ 时间:2020-05-21 09:08:46
解答
99x334+222x33x9
=99x334+222X3x11x9
=99x334+666x99
=99x(334+666)
=99x1000
=99000125x24
=125x8x3
=1000x3
=3000
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