Key learning points

1. To add fractions with the same denominator you add the numerators using the language of unitising.
2. If 2 plus 3 is equal to 5 then 2 one sevenths plus 3 one sevenths is equal to 5 one sevenths.
3. If fractions have the same denominator they can be added.

Keywords

• Generalisation - A generalisation is a statement or rule that applies correctly to all relevant cases.

• Denominator - A denominator is the bottom number in a fraction. It shows how many parts a whole has been divided into.

• Numerator - A numerator is the top number in a fraction. It shows how many parts we have.

Common misconception