Subtract 12: Subtraction Facts
| 13 − 12 = 1 (matching addition: 12 + 1 = 13) |
| 14 − 12 = 2 (matching addition: 12 + 2 = 14) |
| 15 − 12 = 3 (matching addition: 12 + 3 = 15) |
| 16 − 12 = 4 (matching addition: 12 + 4 = 16) |
| 17 − 12 = 5 (matching addition: 12 + 5 = 17) |
| 18 − 12 = 6 (matching addition: 12 + 6 = 18) |
| 19 − 12 = 7 (matching addition: 12 + 7 = 19) |
| 20 − 12 = 8 (matching addition: 12 + 8 = 20) |
| 21 − 12 = 9 (matching addition: 12 + 9 = 21) |
| 22 − 12 = 10 (matching addition: 12 + 10 = 22) |
| 23 − 12 = 11 (matching addition: 12 + 11 = 23) |
| 24 − 12 = 12 (matching addition: 12 + 12 = 24) |
Zoorithmetic https://zoorithmetic.com/
Subtract 12 completes the range and uses the biggest starting number in these facts, 24.
The pattern in the answers
The starting numbers run 13 to 24 with answers 1 to 12, and the last fact, 24 - 12 = 12, halves the starting number.
Tip for the subtract 12 facts
Subtract 10, then 2. For 19 - 12, 19 - 10 = 9, and 9 - 2 = 7.
The 3 hardest facts
- 20 − 12 = 8 (matching addition: 12 + 8 = 20)
- 21 − 12 = 9 (matching addition: 12 + 9 = 21)
- 24 − 12 = 12 (matching addition: 12 + 12 = 24)
Starting numbers from 20 up have a two-digit start and a one-digit or teen answer; take the tens first, then the ones.
Check with addition
Every subtraction fact is an addition fact turned around. Add the answer back to 12 to get the number you started with.
- 1 + 12 = 13, so 13 − 12 = 1
- 2 + 12 = 14, so 14 − 12 = 2
- 3 + 12 = 15, so 15 − 12 = 3
- 4 + 12 = 16, so 16 − 12 = 4
- 5 + 12 = 17, so 17 − 12 = 5
- 6 + 12 = 18, so 18 − 12 = 6
- 7 + 12 = 19, so 19 − 12 = 7
- 8 + 12 = 20, so 20 − 12 = 8
- 9 + 12 = 21, so 21 − 12 = 9
- 10 + 12 = 22, so 22 − 12 = 10
- 11 + 12 = 23, so 23 − 12 = 11
- 12 + 12 = 24, so 24 − 12 = 12
Play the subtract 12 facts game
Untimed by default. A missed fact shows its answer and comes back later in the round.
Printable subtract 12 chart
One US Letter page, clear in black and white.
Quick quiz: subtract 12 facts
10 questions, no timer. At the end you see the score, the facts to practice and a sheet you can print.
Questions parents ask
Why does 24 - 12 equal 12?
Because 12 + 12 = 24. The double fact and its subtraction partner use the same three numbers.
Is subtract 12 on school tests?
Rarely by name. It prepares children for subtracting teen numbers in grade 2 and the multi-digit work in grade 3.