Place value

Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?

A school song book contains 700 songs. The numbers of the songs are displayed by combining special small single-digit cards. What is the minimum number of small cards that is needed?

Who said that adding couldn't be fun?

What is the sum of: 6 + 66 + 666 + 6666 ............+ 666666666...6 where there are n sixes in the last term?

Can you find a number and its double using the digits $1$ to $9$ only once each?

Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

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?

Can you find a number that is halfway between two fractions?

Can you solve this 'KANGAROO' alphanumeric subtraction?

There are nasty versions of this dice game but we'll start with the nice ones...