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1.9×32×125×0.25 用简便计算
8.6×三分之二+8.6÷3
人气:435 ℃ 时间:2020-01-04 18:17:43
解答
1.9×32×125×0.25
=1.9×4×8×125×0.25
=1.9×(8×125)×(4×0.25)
=1.9× 1000×1
=1900
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