Ratio as Parts
Ratio 2:3 means:
ā”ā” : ā”ā”ā”
2 parts : 3 parts
Total = 5 parts
First gets 2/5
Second gets 3/5
Simplifying Ratios
12:18
Ć·2 ā 6:9
Ć·3 ā 2:3
Or find HCF(12,18) = 6
12Ć·6 : 18Ć·6 = 2:3
Ratio to Fraction
Boys:Girls = 3:5
Boys = 3/(3+5) = 3/8
Girls = 5/(3+5) = 5/8
Fractions of whole
This diagram covers Visual Understanding within Ratio Basics for GCSE Mathematics. Revise Ratio Basics in Number for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 15 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
Practice questions for Ratio Basics
Write the ratio 12:18 in its simplest form.
Explain the difference between the ratio 3:5 and the ratio 5:3.