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简便计算:0.8×(4.3×7.25)
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人气:179 ℃ 时间:2020-04-14 16:28:05
解答
0.8×(4.3×7.25)
=0.8×(4.3×1.25x5)
=0.8×1.25x5x4.3
=1x5x4.3
=21.5
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