Some fractions can be made 'simpler'. Simplifying means that the numerator and denominator can be smaller numbers. But the overall value of the fraction is not changed. Complete this interactive ...

You're running 30km? That's very impressive! Not as easy as you thought, huh? Don't worry, there's a water station after 3km. That's three 30ths of the way there. We can simplify that because both ...