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 ...

There are two rules to remember when adding or subtracting fractions. The fractions need to have a common denominator. This means the denominator has to be the same. You only need to add or subtract ...