Addition Table for 3
Each row adds 3 to numbers 1 through 12. Addition tables help build number sense and make mental math faster.
Adding 3 flips parity: every even grows into an odd and every odd into an even — 4 + 3 = 7. The nearest round ten is 10, just 7 away: 3 + 7 = 10. Every fact runs backward for free: from 3 + 6 = 9 comes the subtraction fact 9 − 3 = 6.
| Addend | Sum |
|---|---|
| 3 + 1 | 4 |
| 3 + 2 | 5 |
| 3 + 3 | 6 |
| 3 + 4 | 7 |
| 3 + 5 | 8 |
| 3 + 6 | 9 |
| 3 + 7 | 10 |
| 3 + 8 | 11 |
| 3 + 9 | 12 |
| 3 + 10 | 13 |
| 3 + 11 | 14 |
| 3 + 12 | 15 |
Frequently asked questions
What are the addition facts for 3?
Adding 3 to each number 1 through 12 gives every fact above, from 3 + 1 = 4 up to 3 + 12 = 15.
What is 3 + 7?
3 + 7 = 10.
What is the fastest way to add 3 mentally?
Split 3 into tens and ones, add the tens first, then the ones. For example 3 + 6 = (3 + 5) + 1 = 8 + 1 = 9.