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fact-minute

Grades 1–5 · printable + timed

Addition Timed Test

Pick a fact range, then print the sheet or start the timer.

Operation
Fact range
Problems
Time limit

Addition · Addition · 20 problems · 1 minute NameDateScore
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
Answer key · Addition · Addition · 20 problems NameDate
  1. 1 1 + 0 1
  2. 2 1 + 8 9
  3. 3 8 + 3 11
  4. 4 4 + 7 11
  5. 5 0 + 3 3
  6. 6 12 + 2 14
  7. 7 6 + 4 10
  8. 8 4 + 2 6
  9. 9 2 + 2 4
  10. 10 2 + 7 9
  11. 11 3 + 2 5
  12. 12 6 + 8 14
  13. 13 10 + 8 18
  14. 14 8 + 3 11
  15. 15 0 + 9 9
  16. 16 11 + 4 15
  17. 17 12 + 12 24
  18. 18 6 + 5 11
  19. 19 9 + 12 21
  20. 20 2 + 1 3
0 correct of 20

Correct 0 Wrong 0 Blank 20

0:00 elapsed of 1:00

Elapsed 0s Left 60s

A hundred and sixty-nine sums, ninety-one to learn

Addition is the first fact set a child meets as a set rather than as counting. The full 0–12 grid holds 169 sums, but 3 + 8 and 8 + 3 are the same fact met from two sides, so the number to actually commit to memory is 91. Strip out the +0 and +1 rows, which are rules rather than facts, and about seventy remain.

The sums split cleanly into two jobs. Everything up to 10 can be reasoned out on fingers and gets fast on its own. Everything that crosses ten — 7 + 5, 8 + 6, 9 + 4 — is where a timed sheet earns its place, because crossing ten is a two-step move and two-step moves are slow until they are memorized.

Every addition fact from 0 to 12

Every addition fact from 0 to 12. Row plus column gives the cell.
+ 0123456789101112
0 + 0123456789101112
1 + 12345678910111213
2 + 234567891011121314
3 + 3456789101112131415
4 + 45678910111213141516
5 + 567891011121314151617
6 + 6789101112131415161718
7 + 78910111213141516171819
8 + 891011121314151617181920
9 + 9101112131415161718192021
10 + 10111213141516171819202122
11 + 11121314151617181920212223
12 + 12131415161718192021222324

Read the row label plus the column label; the cell is the sum. The diagonal is the doubles, and the grid is symmetric across it — that symmetry is the 169-to-91 reduction made visible.

The bridge over ten

A child who is fluent to 10 and slow past it is not weak at addition — they are missing one specific move. 8 + 5 becomes 8 + 2 + 3: fill to ten, then add the rest. Until that decomposition is automatic, every sum over ten costs two or three seconds, and a one-minute sheet turns that cost into a visible number.

The other reliable trouble spot is the near-doubles. 6 + 7 is a fact in its own right for most children, even though it is only 6 + 6 with one more. Sheets that mix doubles and near-doubles in the same minute make the gap obvious: the doubles come back right and the neighbours come back blank.

Where to start with addition

Doubles first. The doubles from 2 + 2 to 12 + 12 are thirteen facts that unlock about forty more, because every near-double becomes a double plus or minus one. A sheet of adding 6 or adding 7 is much easier for a child who already has 6 + 6 and 7 + 7 cold.

After that, work the single ranges that cross ten — adding 7, 8 and 9. These are the sheets where a minute limit changes the answer, because a child who is decomposing to ten will finish and a child who is counting on will not. The 0–12 range and the mixed range are the last step rather than the first: they check whether recall holds when the pattern is taken away.

Thirteen sheets for addition

Each of these is its own sheet with its own fact table and its own trouble spots. The single ranges hold one operand steady; 0–12 and mixed draw from the whole set.

Three that come up

How many addition facts should a child know?
Ninety-one distinct sums cover 0 + 0 through 12 + 12 once commutativity is taken into account. Most classroom sets stop at 9 + 9, which is fifty-five.
Should addition be drilled before subtraction?
In practice yes, because most subtraction recall is an addition fact read backwards. A child who does not have 8 + 6 will not have 14 − 6 either.
Why include the +0 and +1 facts on a timed sheet?
They cost almost no time and they keep the sheet from being uniformly hard, which matters when the point is to measure speed rather than to sort children.

What the standards and the critics actually say

Common Core State Standards for Mathematics (PDF), page 19 — 2.OA.B.2 “By end of Grade 2, know from memory all sums of two one-digit numbers.” thecorestandards.org — CCSSI_Math Standards.pdf

NCTM — Procedural Fluency in Mathematics (position statement) “Timed tests do not assess fluency and can negatively affect students, and thus should be avoided.” nctm.org — Procedural Fluency in Mathematics

youcubed — Fluency Without Fear “For about one third of students the onset of timed testing is the beginning of math anxiety.” youcubed.org — Fluency Without Fear