63.2×0.1+6.32×9 用简便计算方法计算.
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63.2×0.1+6.32×9 用简便计算方法计算.
63.2×0.1+6.32×9 用简便计算方法计算.
63.2×0.1+6.32×9 用简便计算方法计算.
63.2×0.1+6.32×9
=63.2×0.1+63.2×0.9
=63.2×(0.1+0.9 )
=63.2×1
=63.2