Addition Table for 9
Each row adds 9 to numbers 1 through 12. Addition tables help build number sense and make mental math faster.
Adding 9 flips parity: every even grows into an odd and every odd into an even — 4 + 9 = 13. The nearest round ten is 10, just 1 away: 9 + 1 = 10. Every fact runs backward for free: from 9 + 6 = 15 comes the subtraction fact 15 − 9 = 6.
| Addend | Sum |
|---|---|
| 9 + 1 | 10 |
| 9 + 2 | 11 |
| 9 + 3 | 12 |
| 9 + 4 | 13 |
| 9 + 5 | 14 |
| 9 + 6 | 15 |
| 9 + 7 | 16 |
| 9 + 8 | 17 |
| 9 + 9 | 18 |
| 9 + 10 | 19 |
| 9 + 11 | 20 |
| 9 + 12 | 21 |
Frequently asked questions
What are the addition facts for 9?
Adding 9 to each number 1 through 12 gives every fact above, from 9 + 1 = 10 up to 9 + 12 = 21.
What is 9 + 7?
9 + 7 = 16.
What is the fastest way to add 9 mentally?
Split 9 into tens and ones, add the tens first, then the ones. For example 9 + 6 = (9 + 5) + 1 = 14 + 1 = 15.