The winning Delaware Play 3 numbers for May 20, 1980 were: night 9-7-4.
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 |
|---|---|---|---|---|
| May 20, 1980 | Night | 9-7-4 | 20 | 2 |
| May 19, 1980 | Night | 2-3-6 | 11 | 2 |
| May 17, 1980 | Night | 0-3-0 | 3 | 3 |
| May 16, 1980 | Night | 0-2-2 | 4 | 4 |
| May 15, 1980 | Night | 7-0-9 | 16 | 7 |
| May 14, 1980 | Night | 0-2-4 | 6 | 6 |