Addition Chart
The addition facts chart from 0+0 to 12+12, with the doubles diagonal marked. Click any cell to check a fact. Below it: the three strategies — plus-one neighbors, doubles, make-a-ten — that retire finger counting for good.
Addition Chart 0-12
| + | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 2 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 3 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 4 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 5 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 6 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 7 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 8 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 9 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 10 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 11 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 12 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
Click any cell to hear the fact read back.
PNG version — the exact file Download PNG saves
The chart that retires finger counting
Addition fluency to 20 is a grade 1-2 milestone, and the chart above is its wall map: every fact from 0+0 through 12+12 in one grid, with the doubles (2+2, 5+5 …) shaded along the diagonal. Like the multiplication chart it mirrors, the grid is symmetric — 4+7 and 7+4 are the same cell reflected — so of the 169 facts here, students truly need to learn only half plus the shaded diagonal.
The strategies matter more than the grid. Plus-one is the next number in the count. Doubles are memorized fast (they rhyme: four and four, door). Near-doubles lean on them (6+7 is double-six plus one). And make-a-ten is the workhorse: 8+5 becomes 8+2+3, landing on 10+3, which everyone knows. A child running those three strategies stops needing fingers mid-second-grade — the chart is where the strategies get pointed at.
Teaching tips
Learn the +0 and +1 rows once, dismiss them
Zero keeps every number the same; plus-one is the next counting word. Two rows of the chart retired in one minute — start every chart lesson by crossing them out.
Doubles first, then their neighbors
Drill the shaded diagonal (2+2 through 6+6) until instant, then ask its neighbors (6+7, 7+8) as double-plus-one. Half the near-doubles row falls to one habit.
Make-a-ten is the graduation move
8+4 → 10+2. 9+6 → 10+5. Facts that bridge ten are the ones fingers get called for; make-a-ten replaces the hand with a strategy. The chart's 10 row is the anchor.
Same chart, subtraction questions
"Find the 12s" — any pair in a row or column summing to 12 is a subtraction fact read backwards. Cover the answer cell and the chart becomes a subtraction trainer for free.
Frequently asked questions
What is an addition chart?
A grid where row and column headers are addends and each cell holds their sum — this one covers every fact from 0+0 to 12+12 (169 cells). Click a cell above to hear the fact read back beneath the chart.
When should kids stop using an addition chart?
Grade 2 is the usual milestone for fluency with facts to 20 — about three seconds per fact without counting. Until then the chart is a legitimate reference; strategy work (doubles, make-a-ten) is what actually retires it.
Why is the diagonal shaded?
Cells where both addends are equal are the doubles — 1+1, 2+2 through 12+12. They are the fastest facts to memorize and the anchor for near-doubles (6+7 = double 6, plus one), so they get their own visual lane.
How does an addition chart help with subtraction?
Read it backwards: pick a sum, find it in the grid, and the row and column headers are the missing addends. Covering answer cells turns the same printed chart into subtraction practice.