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The 17 Times Table
This is a tricky one so think before you choose your answer!

The 17 Times Table

Learn the 17 times table with patterns and tips. Build fluency, spot links to primes and factors, and use seventeen facts to solve real KS3 maths problems.

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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.

  • 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.
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.

1 .
What is 2 x 17
32
33
34
38
34 has only 4 factors: 1, 2, 17 and 34
2 .
What is 4 x 17
74
67
61
68
5 x 17 = 85 and 85 - 17 = 68
3 .
What is 17 x 17
289
286
294
296
17 is the square root of 289
4 .
What is 15 x 17
252
255
248
265
10 x 17 = 170 and 5 x 17 = 85 so 170 + 85 = 15 x 17
5 .
What is 6 x 17
102
96
103
98
102 has 8 factors: 1, 2, 3, 6, 17, 34, 51 and 102
6 .
What is 18 x 17
308
302
298
306
2 x 17 = 34 so 20 x 17 = 340. Therefore, 340 - 34 = 18 x 17
7 .
What is 20 x 17
344
340
339
348
2 x 17 = 34 so 20 x 17 = 340
8 .
What is 13 x 17
224
227
221
225
10 x 17 = 170 and 3 x 17 = 51 so 13 x 17 = 170 - 51
9 .
What is 16 x 17
262
270
272
271
15 x 17 = 255 and 255 + 17 = 272
10 .
What is 14 x 17
235
244
228
238
15 x 17 = 255 and 255 - 17 = 238
Author:  Frank Evans (Specialist 11 Plus Teacher and Tutor)

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