
4.85x1.2x8简便方法?
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4.85x1.2x8
=4.85x8x1.2
=38.8x1.2
=38.8x(1+0.2)
=38.8x1+38.8x0.2
=38.8+7.76
=46.56
=4.85x8x1.2
=38.8x1.2
=38.8x(1+0.2)
=38.8x1+38.8x0.2
=38.8+7.76
=46.56
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