The winning Delaware Play 3 numbers for March 31, 1980 were: night 6-3-5.
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 |
|---|---|---|---|---|
| Mar 31, 1980 | Night | 6-3-5 | 14 | 5 |
| Mar 29, 1980 | Night | 5-2-8 | 15 | 6 |
| Mar 28, 1980 | Night | 6-3-1 | 10 | 1 |
| Mar 27, 1980 | Night | 5-5-2 | 12 | 3 |
| Mar 26, 1980 | Night | 8-8-8 | 24 | 6 |
| Mar 25, 1980 | Night | 4-4-7 | 15 | 6 |