二点83×6点5+2点5×2点83+2点八三怎样简便运算?

2025-06-27 00:29:48
推荐回答(1个)
回答1:

2.83×6.5+2.5×2.83+2.83
=2.83×(6.5+2.5+1)
=2.83×10
=28.3