来自李雪静的问题
脱式计算.(能简算的要用简便方法计算)5.85-1.75-0.255.85+1.89+2.1524.8+4.6+5.415.68-(7.68+2.89)
脱式计算.(能简算的要用简便方法计算)
5.85-1.75-0.25
5.85+1.89+2.15
24.8+4.6+5.4
15.68-(7.68+2.89)
1回答
2020-04-09 19:17