用简便方法计算下面各题:①:6/11x(5/8+7/12)②:14/15X7/8x15③:(3/4+5/8)x32 ④:1/4x2/5X5/6⑤:13/11x3/5-3/5X2/11 要脱式计算和简便计算
问题描述:
用简便方法计算下面各题:①:6/11x(5/8+7/12)②:14/15X7/8x15③:(3/4+5/8)x32 ④:1/4x2/5X5/6
⑤:13/11x3/5-3/5X2/11 要脱式计算和简便计算
答