如何简便运算:89999+8999+899+8989999+8999+89+89=?用简便运算怎么算?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 06:20:15
![如何简便运算:89999+8999+899+8989999+8999+89+89=?用简便运算怎么算?](/uploads/image/z/241419-3-9.jpg?t=%E5%A6%82%E4%BD%95%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%EF%BC%9A89999%2B8999%2B899%2B8989999%2B8999%2B89%2B89%3D%3F%E7%94%A8%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E6%80%8E%E4%B9%88%E7%AE%97%3F)
如何简便运算:89999+8999+899+8989999+8999+89+89=?用简便运算怎么算?
如何简便运算:89999+8999+899+89
89999+8999+89+89=?用简便运算怎么算?
如何简便运算:89999+8999+899+8989999+8999+89+89=?用简便运算怎么算?
90000-1+9000-1+900-1+90-1=99990-4=99986