The winning Michigan Daily 4 numbers for December 31, 1998 were: midday 9-9-8-7; evening 1-4-8-7.
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 |
|---|---|---|---|---|
| Dec 31, 1998 | Evening | 1-4-8-7 | 20 | 2 |
| Dec 31, 1998 | Midday | 9-9-8-7 | 33 | 6 |
| Dec 30, 1998 | Evening | 8-3-1-4 | 16 | 7 |
| Dec 30, 1998 | Midday | 4-2-2-1 | 9 | 9 |
| Dec 29, 1998 | Evening | 5-1-5-9 | 20 | 2 |
| Dec 29, 1998 | Midday | 3-9-4-7 | 23 | 5 |
| Dec 28, 1998 | Evening | 3-0-4-3 | 10 | 1 |
| Dec 28, 1998 | Midday | 8-2-8-0 | 18 | 9 |
| Dec 26, 1998 | Evening | 5-3-9-6 | 23 | 5 |
| Dec 26, 1998 | Midday | 5-4-0-9 | 18 | 9 |