42.5×0.99+0.425如何 简算

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42.5×0.99+0.425如何简算42.5×0.99+0.425如何简算42.5×0.99+0.425如何简算42.5×0.99+0.425=42.5×0.99+42.5×0.01=42.5×(0

42.5×0.99+0.425如何 简算
42.5×0.99+0.425如何 简算

42.5×0.99+0.425如何 简算
42.5×0.99+0.425
=42.5×0.99+42.5×0.01
=42.5×(0.99+1)
=42.5×1
=42.5