Use the unitary method
- Divide to find one unit.
- Multiply to find the required number.
- Check units.
Answer: 8 items cost £24, so 5 cost £15
⚖️ Ratio, Proportion & Rates
Unitary method
Learn unitary method with a GCSE-style explanation, help guide, worked example, practice question and flashcards.
Global XP
Level 10 / 100 XP
1. Explanation
Key idea
- Unitary method is part of ratio & proportion and appears often in KS3–GCSE maths.
- The unitary method finds one unit first, then scales up.
- Use the worked model, help guide, interactive question and flashcards to practise unitary method until the steps feel automatic.
Real-life examples
- Shopping, sport, travel, science, design and everyday decisions all use this skill.
2. Visual
Unitary method learning map
Understand the key idea → follow the help guide → practise a question → check your method → build speed with flashcards.
3. Help guide
How to tackle Unitary method
- Learn the rule: The unitary method finds one unit first, then scales up.
- Worked model: Divide to find one unit. Multiply to find the required number. Check units.
- Try the interactive question without looking at the answer first.
- Use the flashcards to test the rule, the method and a common check.
4. Worked examples
Step-by-step working
5. Interactive questions
Try it yourself
If 6 notebooks cost £9, how much do 10 cost?
6. Flashcards
Master quick recall
Flip each card, then choose whether you know it or need more practice.
0 mastered
FrontRule for Unitary method
BackThe unitary method finds one unit first, then scales up.
FrontExample answer: If 6 notebooks cost £9, how much do 10 cost?
Back£9 ÷ 6 = £1.50 each. 10 × £1.50 = £15.
FrontCommon check for Unitary method
BackCheck units/notation, compare with an estimate, and make sure the answer matches the question.
7. Finish
Complete this topic
When you have read the examples, tried the question and reviewed flashcards, claim your topic completion XP.