简便计算301x5-15
第1个回答 2017-03-18
简便计算301x5-15
=301x5-5-10
=(301-1)x5-10
=300x5-10
=1500-10
=1490
=301x5-5-10
=(301-1)x5-10
=300x5-10
=1500-10
=1490
第2个回答 2017-03-18
301x5-15
=5*(301-3)
=5*208
=1040本回答被网友采纳
=5*(301-3)
=5*208
=1040本回答被网友采纳