15 times table at a glance
- 15 × 10
- 150
- 15 × 12
- 180
- 15 × 15 (square)
- 225
- 15 × 20
- 300
- Each step adds
- 15
- Sum of ×1 to ×20
- 3,150
The 15 times table from 1 to 20
15 sits beyond the standard 12 × 12 chart, but its multiples come up constantly — a quarter-hour is 15 minutes. Each row also gives the division fact it answers.
| Fact | Answer | Division fact |
|---|---|---|
| 15 × 1 | 15 | 15 ÷ 15 = 1 |
| 15 × 2 | 30 | 30 ÷ 15 = 2 |
| 15 × 3 | 45 | 45 ÷ 15 = 3 |
| 15 × 4 | 60 | 60 ÷ 15 = 4 |
| 15 × 5 | 75 | 75 ÷ 15 = 5 |
| 15 × 6 | 90 | 90 ÷ 15 = 6 |
| 15 × 7 | 105 | 105 ÷ 15 = 7 |
| 15 × 8 | 120 | 120 ÷ 15 = 8 |
| 15 × 9 | 135 | 135 ÷ 15 = 9 |
| 15 × 10 | 150 | 150 ÷ 15 = 10 |
| 15 × 11 | 165 | 165 ÷ 15 = 11 |
| 15 × 12 | 180 | 180 ÷ 15 = 12 |
| 15 × 13 | 195 | 195 ÷ 15 = 13 |
| 15 × 14 | 210 | 210 ÷ 15 = 14 |
| 15 × 15 | 225 | 225 ÷ 15 = 15 |
| 15 × 16 | 240 | 240 ÷ 15 = 16 |
| 15 × 17 | 255 | 255 ÷ 15 = 17 |
| 15 × 18 | 270 | 270 ÷ 15 = 18 |
| 15 × 19 | 285 | 285 ÷ 15 = 19 |
| 15 × 20 | 300 | 300 ÷ 15 = 20 |
Patterns in the 15 times table
- Last digits. The ones digits repeat every 2 steps: 5, 0, then 5, 0 again and so on. Only 2 different endings ever appear.
- Odd and even. 15 is odd, so the answers alternate odd, even, odd, even — odd times odd is odd, odd times even is even.
- Digit sums. Reduce each answer to a single digit by adding its digits and you get 6, 3, 9, repeating — a sign that every answer is a multiple of 3.
- Built from smaller tables. 15 = 3 × 5, so you can multiply by 3 and then by 5: 15 × 7 = 5 × 21 = 105.
- Split by place value. 15 × k = 10 × k + 5 × k, so 15 × 13 = 130 + 65 = 195.
A shortcut for multiplying by 15
Ten times plus half of that: 15 × 8 = 80 + 40 = 120. With an even factor, halve it and multiply by 30: 15 × 8 = 4 × 30.
Worked example: 15 × 7
Split 15 into 10 + 5: 10 × 7 = 70 and 5 × 7 = 35, so 15 × 7 = 105.
Practice: 15 times table questions
- 15 × 5 = ?
- 15 × 10 = ?
- 15 × 20 = ?
- 15 × 4 = ?
- 7 × 15 = ?
- 11 × 15 = ?
- 15 × ? = 225
- 15 × ? = 240
- 195 ÷ 15 = ?
- Word problem: A quarter-hour is 15 minutes. How many minutes are there in 18 quarter-hours?
Show the answers
- 75
- 150
- 300
- 60
- 105
- 165
- 15
- 16
- 13
- 18 × 15 = 270 minutes
For a self-checking quiz with new questions every time, use the practice mode of the multiplication table.
Related to the 15 times table
- 15 × 15 = 225, so the square root of 225 is 15.
- The factors of 15 are 1, 3, 5 and 15; they pair up as 1 × 15 and 3 × 5, so 15 appears as an answer in each of those tables.
- Every answer in this table is a multiple of 15; the multiples calculator lists them past × 20.
Frequently asked questions
What is the 15 times table up to 12?
15 × 1 = 15, 15 × 2 = 30, 15 × 3 = 45, 15 × 4 = 60, 15 × 5 = 75, 15 × 6 = 90, 15 × 7 = 105, 15 × 8 = 120, 15 × 9 = 135, 15 × 10 = 150, 15 × 11 = 165, 15 × 12 = 180.
What is the easiest way to learn the 15 times table?
Ten times plus half of that: 15 × 8 = 80 + 40 = 120. With an even factor, halve it and multiply by 30: 15 × 8 = 4 × 30.
What is 15 times 20?
15 × 20 = 300. Multiply 15 by 2 to get 30, then write a zero on the end.
Where is the 15 times table used in real life?
Any time you count equal groups of 15: a quarter-hour is 15 minutes, so the minutes in several quarter-hours come straight from the 15 times table.