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98×37×37×125-125×37×18的巧算
人气:495 ℃ 时间:2020-01-14 17:43:24
解答
98×37×37×125-125×37×18
=125*37*(98*37-18)
=125*37*[(100-2)*37-18]
=125*37*3608
=125*37*8*451
=1000*37*451
=16687000
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