(92.5-3.2×10.5)÷1.25怎么巧算?

2025-06-28 07:43:07
推荐回答(1个)
回答1:

=(92.5-1.6×2×10.5)×10÷8
=(92.5-1.6×21)×10÷8
=92.5×10÷8-1.6×21×10÷8
=925÷8-12×21
=115.625-42
=73.625