Find out how to add and subtract fractions with matching and different denominators in this Year 6 article from BBC Bitesize.

Three, two, one…blast off! Wow, blasting off used five eighths of your fuel. If you used five eighths of your fuel to take off, and another two eighths to get this far, how much fuel have you used? To ...

In adding and subtracting fractions with unlike denominators, you have to get a least common denominator which is exactly like the least common multiple it just so happens to be in the denominator.

Use visual fraction models to add and subtract fractions with the same denominators.