If you want to do well in maths it's a good idea to learn as many of the times tables as you can. Most people learn the times tables up to 12 but, for KS3 Maths, we thought you'd like a bit more of a challenge. That's why we're going to test your times table knowledge all the way up to the 20 times table. In this quiz we look at the last, the 20 times table.

40, 100 and 380 are answers in the 20 times table. That's because they are all multiples of 20. The 20 times table is one of the easier ones so long as you can multiply numbers by 2 and by 10.

If you are glad you've finally reached the end of the times tables then here's a little poem by an unknown author as a reward:

There was a young man from Trinity,

Who solved the square root of infinity.

While counting the digits,

He was seized by the fidgets,

Dropped science, and took up divinity.

I hope you haven't been put off science and maths by the times tables! Have a go at this 20 times table quiz to see how well you can do.

1.

What is 15 x 20

300

292

306

302

10 x 20 = 200 and 5 x 20 = 100 so 100 + 200 = 15 x 20

2.

What is 17 x 20

340

345

330

341

17 x 2 = 34 so 17 x 20 = 340

3.

What is 19 x 20

387

388

390

380

20 x 20 = 400 and 400 - 20 = 380

4.

What is 9 x 20

176

183

180

185

180 is the maximum score on a dartboard with 3 darts

5.

What is 14 x 20

280

283

276

278

14 x 2 = 28 so 14 x 20 = 280

6.

What is 12 x 20

240

231

241

235

2 x 12 = 24 so 20 x 12 = 240

7.

What is 6 x 20

114

116

130

120

6 x 2 = 12 so 6 x 20 = 120

8.

What is 4 x 20

84

83

71

80

In Roman numerals 80 is written as LXXX

9.

What is 3 x 20

59

64

63

60

In geometry, there are 60 seconds in a minute and 60 minutes in a degree

10.

What is 18 x 20

369

352

361

360

There are 360 degrees in a circle