This key facts covers Key Rules for Simplifying within Ratio Problems for GCSE Mathematics. Revise Ratio Problems in Ratio & Proportion for GCSE Mathematics with 14 exam-style questions and 3 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 2 of 7 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 7
Practice
14 questions
Recall
3 flashcards
Key Rules for Simplifying
1️⃣
Find the HCF (Highest Common Factor) of all parts
2️⃣
Divide each part by the HCF
⚠️
Ratios must be in the SAME UNITS before simplifying
✓
Keep going until you can't simplify any further