3.56×2.8+35.6×0.28的简便计算
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3.56×2.8+35.6×0.28
=35.6×2.8+3.56×2.8
=35.6×2.8×2
=35.6×5.6
=199.36
=35.6×2.8+3.56×2.8
=35.6×2.8×2
=35.6×5.6
=199.36
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