Key learning points

1. Fractions need to have the same denominator if you are to add and subtract them.
2. When adding or subtracting fractions with the same denominators you just add or subtract the numerators.
3. When the sum of the numerators is greater than the denominator you can convert the improper fraction to a mixed number.

Keywords

• Common denominator - When two or more fractions share the same denominator, you can say they have a common denominator.

Common misconception