8.6×34.5+0.345×140简便计算

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8.6×34.5+0.345×140简便计算8.6×34.5+0.345×140简便计算8.6×34.5+0.345×140简便计算=8.6×34.5+0.345×140=8.6×34.5+34.5×

8.6×34.5+0.345×140简便计算
8.6×34.5+0.345×140简便计算

8.6×34.5+0.345×140简便计算
=8.6×34.5+0.345×140
=8.6×34.5+34.5×1.4
=34.5×(1.4+8.6)
=34.5×10=345

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