Content description

Solve problems involving addition and subtraction of fractions, including those with unrelated denominators (ACMNA153)

Source: Australian Curriculum, Assessment and Reporting Authority (ACARA)

Addition of fractions with the same denominator

Addition of two fractions with the same denominator can be thought of as steps on the number line.

To add $$\dfrac{3}{8} \text{and} \dfrac{4}{8} \text{we start at} \dfrac{3}{8} \text{and take a step of} \dfrac{4}{8} \text{to get} \dfrac{7}{8}$$.

We write $$\dfrac{3}{8} + \dfrac{4}{8} = \dfrac{7}{8}$$.