Understanding fractions
Lesson 1 of 11
Equivalent fractions
Objective. Generate and recognise fractions of equal value.
The key idea
Multiplying or dividing numerator and denominator by the same number cuts the same cake into more or fewer slices — the amount is unchanged.
Worked example
Simplify 18/24.
- 1The highest common factor of 18 and 24 is 6.
- 218 ÷ 6 = 3 and 24 ÷ 6 = 4.
Answer: 3/4
Practice
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