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0.36乘3.6乘9.9怎么简算
人气:429 ℃ 时间:2020-06-06 11:25:52
解答
0.36×3.6×9.9
=1.296×(10-0.1)
=1.296×10-1.296×0.1
=12.96-0.1296
=12.8496
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