The winning Delaware Play 3 numbers for July 21, 1997 were: day 5-1-7; night 2-0-2.
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
| Date | Draw | Numbers | Sum | Root |
|---|---|---|---|---|
| Jul 21, 1997 | Night | 2-0-2 | 4 | 4 |
| Jul 21, 1997 | Day | 5-1-7 | 13 | 4 |
| Jul 20, 1997 | Night | 8-1-9 | 18 | 9 |
| Jul 19, 1997 | Night | 4-3-5 | 12 | 3 |
| Jul 19, 1997 | Day | 4-4-3 | 11 | 2 |
| Jul 18, 1997 | Night | 6-0-6 | 12 | 3 |
| Jul 18, 1997 | Day | 6-6-4 | 16 | 7 |
| Jul 17, 1997 | Night | 6-0-4 | 10 | 1 |
| Jul 17, 1997 | Day | 1-5-3 | 9 | 9 |
| Jul 16, 1997 | Night | 0-9-1 | 10 | 1 |
| Jul 16, 1997 | Day | 3-1-2 | 6 | 6 |
| Jul 15, 1997 | Night | 3-3-1 | 7 | 7 |
| Jul 15, 1997 | Day | 7-8-3 | 18 | 9 |