Proportion (AQA GCSE Maths): Flashcards
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Practise the cards
10 cards from this deck
What is proportion?
What is proportion?
Relationship between two quantities and how they change in relation to each other
Direct proportion: how do quantities change?
Direct proportion: how do quantities change?
Quantities change in same direction at consistent rate
Direct proportion method (2 steps)
Direct proportion method (2 steps)
- Find unit rate
- Multiply by required amount
Give an example of direct proportion
Give an example of direct proportion
Items purchased and total cost
Inverse proportion: how do quantities change?
Inverse proportion: how do quantities change?
Quantities change in opposite directions
Inverse proportion key characteristic
Inverse proportion key characteristic
Multiplying two quantities together always gives same result
Inverse proportion method (2 steps)
Inverse proportion method (2 steps)
- Calculate total work
- Divide by new quantity
Give an example of inverse proportion
Give an example of inverse proportion
Speed and journey time for fixed distance
When should you multiply in proportion problems?
When should you multiply in proportion problems?
Direct relationship: more input gives more output
When should you divide in proportion problems?
When should you divide in proportion problems?
Inverse relationship: more resources gives less time needed