159+306怎么简便计算?

2024-11-20 20:32:16
推荐回答(3个)
回答1:

160+306-1=465

回答2:

159+306
=159+300+6
=459+6
=465

回答3:

=(200-1)+(300+6)
=200+300-1+6
=500-1+6
=505