72+74+78+80+82+84+86+88怎么简便计算?

2024-12-27 09:45:52
推荐回答(2个)
回答1:

72+74+78+80+82+84+86+88 =81x8=648

回答2:

=72+88+74+86+78+82+80+84
=160+160+160+164
=480+164
=644