Addition Grid
Click any cell to explore the addition fact. Use the highlights to find number bonds to 10 and 20, doubles, teen numbers and more. Great for KS1 — Years 1–3, ages 5–8. Fully print-ready.
Addition Grid — 1 to 12
mathsolvers.io/tables/addition-grid/
| + | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
Click any cell to explore it →
What's hiding in the grid?
Number bonds to 10
Pairs that add up to 10 are the building blocks of mental maths — 1+9, 2+8, 3+7, 4+6, 5+5. Knowing them by heart makes adding much faster!
Click to highlight →
Doubles
When you add a number to itself — 3+3=6, 7+7=14 — that's a double. Doubles run diagonally across the grid from top-left to bottom-right.
Click to highlight →
Number bonds to 20
Once you know bonds to 10, bonds to 20 are the next step: 12+8=20, 15+5=20, 11+9=20. See how many pairs you can find!
Click to highlight →
Teen numbers (13–19)
Numbers from 13 to 19 are called teen numbers. They can be tricky! Can you see where they cluster in the grid?
Click to highlight →
Even and odd sums
Even + even = even. Odd + odd = even. Even + odd = odd. This means 3 out of 4 cells in the grid are even — can you spot the pattern?
Click to highlight →
Mirror symmetry
3+7 = 7+3 = 10. The grid is perfectly symmetrical along the diagonal — this is called commutativity. You only need to learn half the facts!
Spot it — the grid mirrors itself