The winning Connecticut Play3 numbers for March 18, 2021 were: day 5-5-7; night 1-6-8.
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 |
|---|---|---|---|---|
| Mar 18, 2021 | Night | 1-6-8 | 15 | 6 |
| Mar 18, 2021 | Day | 5-5-7 | 17 | 8 |
| Mar 17, 2021 | Night | 0-0-8 | 8 | 8 |
| Mar 17, 2021 | Day | 9-7-0 | 16 | 7 |
| Mar 16, 2021 | Night | 9-9-4 | 22 | 4 |
| Mar 16, 2021 | Day | 7-5-7 | 19 | 1 |
| Mar 15, 2021 | Night | 1-4-4 | 9 | 9 |
| Mar 15, 2021 | Day | 4-9-2 | 15 | 6 |
| Mar 14, 2021 | Night | 1-9-6 | 16 | 7 |
| Mar 14, 2021 | Day | 4-4-1 | 9 | 9 |
| Mar 13, 2021 | Night | 1-3-4 | 8 | 8 |
| Mar 13, 2021 | Day | 9-4-3 | 16 | 7 |
| Mar 12, 2021 | Night | 8-9-3 | 20 | 2 |
| Mar 12, 2021 | Day | 0-9-3 | 12 | 3 |