599999+49999+3999+299+19的简便算法是什么?(综合算式)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/28 20:29:13
599999+49999+3999+299+19的简便算法是什么?(综合算式)
![599999+49999+3999+299+19的简便算法是什么?(综合算式)](/uploads/image/z/18000850-58-0.jpg?t=599999%2B49999%2B3999%2B299%2B19%E7%9A%84%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E6%98%AF%E4%BB%80%E4%B9%88%3F%28%E7%BB%BC%E5%90%88%E7%AE%97%E5%BC%8F%EF%BC%89)
599999+49999+3999+299+19
=600000-1+50000-1+4000-1+300-1+20-1
=654320-5
=654315
=600000-1+50000-1+4000-1+300-1+20-1
=654320-5
=654315