Times tables are easy to learn, you know, when you’re multiplying by 2 and 3 in primary school. You’re either doubling or tripling the number, and if you’ve got your tables memorised, you can probably ...

The 9 times table. Knowing your times tables is really helpful with mental maths and problem solving. You can easily tell whether a number is a multiple of 9 by adding the digits together.

Learn the times tables from 1-12 with fun, interactive BBC Bitesize maths videos, quizzes, and times tables songs for KS1 and KS2.

There might be patterns in some of them (the simple doubling of the 2 times table) but others you just learnt by rote. And it was never quite clear just why it was necessary to know what 7 x 9 is ...