Multiplication and division

Ahmed is making rods using different numbers of cubes. Which rod is twice the length of his first rod?

These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?

A 750 ml bottle of concentrated orange squash is enough to make fifteen 250 ml glasses of diluted orange drink. How much water is needed to make 10 litres of this drink?

An old game with lots of arithmetic!

What happens when you add the digits of a number then multiply the result by 2 and you keep doing this? You could try for different numbers and different rules.