计算下面各题,能简便的要简便计算.
×× (+)×27 ×6+×6
+× ×× (+)×36
××50 [4﹣(﹣)]×.
计算下面各题,能简便的要简便计算.
×× (+)×27 ×6+×6
+× ×× (+)×36
××50 [4﹣(﹣)]×.
试题篮
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