计算二点五乘零点八减一点八乘零点五简便运算怎么算

2025-03-23 13:46:52
推荐回答(1个)
回答1:

2.5x0.8一1.8x0.5简便运算
=0.5x5x0.8一1.8x0.5
=0.5x(5x0.8一1.8)
=0.5x(4一1.8)
=0.5x2.2
=1.1