3.5+6.5×2.6ሢ1.6怎么简算?

2025-06-20 17:42:55
推荐回答(1个)
回答1:

3.5+6.5*2.6−1.6
=3.5+6.5*(1+1.6)-1.6
=3.5+6.5+6.5*1.6-1.6
=10+1.6*(6.5-1)
=10+1.6*(5+0.5)
=10+8+0.8
=18.8