8.6×2.7+3.5×1.6怎样简便计算?
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8.6×2.7+3.5×1.6怎样简便计算?
8.6×2.7+3.5×1.6怎样简便计算?
8.6×2.7+3.5×1.6怎样简便计算?
把8.6 2.7 3.5 1.6分别化为分数,分别是
=86/10X27/10+35/10X16/10
=2322/10+1260/10
=3582/10
=358.2