What if …
… you had to do mental maths all day?
Market stallholder Tony O’Hara lets us in on a few tips for mental maths. Includes adding, subtracting and multiplying, rounding up and down, and approximating.

… you wanted loads of new outfits?
The presenters work out how many permutations you can get from buying nine items of clothing.

… you wanted to paint your room?
DIY TV presenter Julia Miller helps two boys work out how much paint they need to re-decorate a bedroom, working out areas and volumes.