| URL | Priority | Change frequency | Last modified (GMT) |
|---|---|---|---|
| https://gordonburgin.com/2017/05/may-2017-challenge/ | 20% | Monthly | 2017-06-24 18:43 |
| https://gordonburgin.com/2017/05/x-sums/ | 20% | Monthly | 2017-06-05 14:31 |
| https://gordonburgin.com/2017/05/sum-it-4-sided-pyramid/ | 20% | Monthly | 2017-06-05 14:35 |
| https://gordonburgin.com/2017/05/sum-it/ | 20% | Monthly | 2017-06-05 14:35 |
| https://gordonburgin.com/2017/05/star-sums/ | 20% | Monthly | 2017-06-05 14:36 |
| https://gordonburgin.com/2017/05/square-up/ | 20% | Monthly | 2017-06-05 14:38 |
| https://gordonburgin.com/2017/05/square-sums/ | 20% | Monthly | 2017-06-05 14:38 |
| https://gordonburgin.com/2017/05/scientific-and-engineering-notation/ | 20% | Monthly | 2017-06-05 14:40 |
| https://gordonburgin.com/2017/05/safety-code/ | 20% | Monthly | 2017-06-05 14:40 |
| https://gordonburgin.com/2017/05/roman-arithmetic/ | 20% | Monthly | 2017-06-05 14:59 |