The winning Delaware Play 3 numbers for July 31, 1980 were: night 3-6-3.
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 31, 1980 | Night | 3-6-3 | 12 | 3 |
| Jul 30, 1980 | Night | 4-2-1 | 7 | 7 |
| Jul 29, 1980 | Night | 5-3-5 | 13 | 4 |
| Jul 28, 1980 | Night | 6-7-5 | 18 | 9 |
| Jul 26, 1980 | Night | 4-1-4 | 9 | 9 |
| Jul 25, 1980 | Night | 8-9-6 | 23 | 5 |