1 Times Table

Each line of the 1 times table gives back the other number: read it, quiz it, print it.

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1 times table facts

1 times table up to × 12.

How it works

Twelve lines, 1 × 1 = 1 to 1 × 12 = 12, make up the 1 times table; choose × 20 under Go up to and it runs on to 1 × 20 = 20. In the one times table every answer is the other number.

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One rule in place of twenty facts

Multiplying by 1 leaves a number as it is. One group of 7 is 7, and seven groups of 1 are 7 again, so 1 × 7 = 7 and 7 × 1 = 7 are one fact read two ways. Each line also holds two division facts: 7 ÷ 1 = 7 and 7 ÷ 7 = 1.

Hide the answers out of order

In order the answers only count 1, 2, 3, so a quiz proves little. Open More options and set Order of the facts to Mixed up before New quiz. Then the slip shows: a child who writes 8 for 1 × 7 has added, since 1 + 7 = 8.

  • On a 12 by 12 chart, 2, 3, 5, 7 and 11 sit only in the 1 row and column.
  • Keep the two rule tables apart: 0 × 7 = 0, but 1 × 7 = 7.

Questions and answers

What is the 1 times table?

It is the list 1 × 1 = 1, 1 × 2 = 2, 1 × 3 = 3 and on to 1 × 12 = 12. The answers are the counting numbers in order, because one group of a number is that number.

Why does multiplying by 1 not change a number?

1 × 9 means one group of 9, and one group of 9 is 9 things. The name for this is the identity property of multiplication: anything multiplied by 1 is itself.

What is 1 × 0?

0. One group of nothing is nothing, and the rule still holds, since the other number is 0. Multiply any number by 0 and you get 0, which is called the zero property.

Is 1 × 7 the same as 1 + 7?

No. 1 × 7 is one group of 7, which is 7. 1 + 7 is 7 and one more, which is 8. Multiplying by 1 never changes the number; adding 1 always makes it one bigger.

All 20 facts

Know these first: × 1, × 2, × 5, × 10 4

  • 1 × 1 = 1 One group of 1. This is the only line where both numbers and the answer match, and turned around it is still 1 × 1.
  • 1 × 2 = 2 One pair is 2. Turned around, 2 × 1 is two groups of 1, and that is 2 as well.
  • 1 × 5 = 5 One pentagon has 5 sides. Read backward, the line gives 5 ÷ 1 = 5 and 5 ÷ 5 = 1.
  • 1 × 10 = 10 One decade is 10 years. Nothing is added and no zero is stuck on: the answer is the other number.

One rule for the rest of the chart 8

  • 1 × 3 = 3 One triangle has 3 sides. The slip to watch is 1 + 3 = 4, which is adding.
  • 1 × 4 = 4 One square has 4 sides. The answer 4 comes back on the chart at 2 × 2.
  • 1 × 6 = 6 One cell of a honeycomb has 6 sides. On the chart, 6 is also 2 × 3.
  • 1 × 7 = 7 One week is 7 days. Seven groups of 1, written 7 × 1, make the same 7.
  • 1 × 8 = 8 One octopus has 8 limbs. If 9 comes out, that was 1 + 8.
  • 1 × 9 = 9 One baseball team puts 9 players on the field. The division facts are 9 ÷ 1 = 9 and 9 ÷ 9 = 1.
  • 1 × 11 = 11 One soccer team has 11 players on the field. On a 12 by 12 chart, 11 sits only in the 1 row and the 1 column.
  • 1 × 12 = 12 One dozen is 12. This line ends the 1 row of a 12 by 12 chart; read backward it gives 12 ÷ 1 = 12.
Show all 20 facts (8 more)

Past the chart: 1 × 13 to 1 × 20 8

  • 1 × 13 = 13 One group of 13. Only 1 and 13 multiply to 13, so this line and its turnaround are the only facts that make it.
  • 1 × 14 = 14 One sonnet has 14 lines. 14 is also 2 × 7, so it sits on the chart away from the 1 row.
  • 1 × 15 = 15 One group of 15, the answer 3 × 5 gives too. Watch for 1 + 15 = 16.
  • 1 × 16 = 16 One group of 16. On a 12 by 12 chart 16 turns up three times, at 2 × 8, 8 × 2 and 4 × 4.
  • 1 × 17 = 17 One group of 17. Like 13, it is a prime number: 17 ÷ 1 = 17 and 17 ÷ 17 = 1 are the only divisions that come out whole.
  • 1 × 18 = 18 One group of 18, which 2 × 9 and 3 × 6 also make. Turned around, 18 × 1 is eighteen groups of 1.
  • 1 × 19 = 19 One group of 19. No other pair of whole numbers multiplies to 19, so it is nowhere on a 12 by 12 chart.
  • 1 × 20 = 20 One score is 20. The chart stops at 1 × 20 = 20, but the rule does not: 1 × 1,000 = 1,000.

How this list was compiled: Own work: each of the 20 facts, and every sum in the notes, was worked out by multiplication and again by repeated addition, and the two answers agreed. The rule that anything multiplied by 1 is itself (https://en.wikipedia.org/wiki/Multiplication) and the real-world notes were checked against Wikipedia on 2026-09-30, among them the 14 lines of a sonnet (https://en.wikipedia.org/wiki/Sonnet) and the score of 20 (https://en.wikipedia.org/wiki/20_%28number%29). Licence: own work