Addition Table for 11
Each row adds 11 to numbers 1 through 12. Addition tables help build number sense and make mental math faster.
Adding 11 flips parity: every even grows into an odd and every odd into an even — 4 + 11 = 15. The nearest round ten is 20, just 9 away: 11 + 9 = 20. Every fact runs backward for free: from 11 + 6 = 17 comes the subtraction fact 17 − 11 = 6.
| Addend | Sum |
|---|---|
| 11 + 1 | 12 |
| 11 + 2 | 13 |
| 11 + 3 | 14 |
| 11 + 4 | 15 |
| 11 + 5 | 16 |
| 11 + 6 | 17 |
| 11 + 7 | 18 |
| 11 + 8 | 19 |
| 11 + 9 | 20 |
| 11 + 10 | 21 |
| 11 + 11 | 22 |
| 11 + 12 | 23 |
Frequently asked questions
What are the addition facts for 11?
Adding 11 to each number 1 through 12 gives every fact above, from 11 + 1 = 12 up to 11 + 12 = 23.
What is 11 + 7?
11 + 7 = 18.
What is the fastest way to add 11 mentally?
Split 11 into tens and ones, add the tens first, then the ones. For example 11 + 6 = (11 + 5) + 1 = 16 + 1 = 17.