490/35怎样简便计算
问题描述:
490/35怎样简便计算
答
490/35
=7 *7*10/7*5
=7*5*2/5
=7*2
=14
490/35怎样简便计算
490/35
=7 *7*10/7*5
=7*5*2/5
=7*2
=14