The winning Michigan Daily 3 numbers for December 21, 2017 were: midday 9-0-7; evening 7-3-4.
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).
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 21, 2017 | Evening | 7-3-4 | 14 | 5 |
| Dec 21, 2017 | Midday | 9-0-7 | 16 | 7 |
| Dec 20, 2017 | Evening | 9-2-9 | 20 | 2 |
| Dec 20, 2017 | Midday | 3-1-2 | 6 | 6 |
| Dec 19, 2017 | Evening | 3-9-5 | 17 | 8 |
| Dec 19, 2017 | Midday | 0-1-4 | 5 | 5 |
| Dec 18, 2017 | Evening | 6-3-7 | 16 | 7 |
| Dec 18, 2017 | Midday | 9-0-6 | 15 | 6 |
| Dec 17, 2017 | Evening | 1-3-2 | 6 | 6 |
| Dec 17, 2017 | Midday | 6-1-4 | 11 | 2 |
| Dec 16, 2017 | Evening | 5-5-2 | 12 | 3 |
| Dec 16, 2017 | Midday | 3-0-5 | 8 | 8 |
| Dec 15, 2017 | Evening | 1-9-1 | 11 | 2 |
| Dec 15, 2017 | Midday | 9-9-8 | 26 | 8 |