5.01+5.02+5.03+5.04+5.05+...+5.99用简便方法怎么做?
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:2024/08/03 08:34:21
5.01+5.02+5.03+5.04+5.05+...+5.99用简便方法怎么做?
![5.01+5.02+5.03+5.04+5.05+...+5.99用简便方法怎么做?](/uploads/image/z/3703857-33-7.jpg?t=5.01%2B5.02%2B5.03%2B5.04%2B5.05%2B...%2B5.99%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E6%80%8E%E4%B9%88%E5%81%9A%3F)
5.01+5.02+5.03+5.04+5.05+...+5.99
=5*99+(0.01+0.99)*49+0.5
=495+49+0.5
=544.5
=5*99+(0.01+0.99)*49+0.5
=495+49+0.5
=544.5