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51问答网 > 去买猪肉，1斤2两7钱，每斤9角8分，怎样简便计算，它的基本公式是怎样的？请举例说明好吗？谢谢。

去买猪肉，1斤2两7钱，每斤9角8分，怎样简便计算，它的基本公式是怎样的？请举例说明好吗？谢谢。

2025-03-15 00:33:41

推荐回答（1个）

回答1：

1斤2两7钱=1.27斤
9角8分=0.98元
1.27×0.98
=1.27×(1-0.02)
=1.27×1-1.27×0.02
=1.27-1.27×2÷100
=1.27-2.54÷100
=1.27-0.0254
=1.2446(元)
=1元2角4分4厘6毫
≈1.24元

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