Fascinating Fact:
An Olympic swimming pool length is about 17 times a 3 m springboard height, 50 m compared to 3 m.
In KS3 Maths, the 17 times table builds confident multiplication with a prime number. You’ll use doubling-and-adjusting strategies, recognise sequences of 17, and apply them to ratio, perimeter, and scale questions.
Key Terms
- Multiple of 17: A number in the 17 times table (17, 34, 51, 68, …).
- Prime: A number with exactly two factors, 1 and itself. Seventeen is prime.
- Product: The result of a multiplication, for example 17 × 6 = 102.
Practise your 17× facts with timed rounds in the
Multiplication Game
before tackling the FAQs below.
Frequently Asked Questions (Click to see answers)
What is the fastest way to learn the 17 times table?
Use “20n − 3n”: 17 × n = (20 × n) − (3 × n). You can also do 17 × n = (10 × n) + (5 × n) + (2 × n). Practise these with small n first.
How can I check if a number is a multiple of 17?
Divide by 17 and see if there is no remainder. For mental checks, compare with nearby 170s or 340s, or use (20n − 3n) to see if it fits an integer n.
Where is the 17 times table used in real life?
You’ll meet 17 in prime-based patterns, modular arithmetic, code puzzles, and scaled measures such as steps of 17 units in grids, seating, or stock counts.
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