4.05_2.8_2.7用简便方法计算

4.05_2.8_2.7用简便方法计算
2024-11-30 05:18:05
推荐回答(1个)
回答1:

4.05-2.8-2.7
=4.05-(2.8+2.7)
=4.05-5.5
=-1.45