Proportion (Edexcel GCSE Maths): Flashcards
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Practise the cards
12 cards from this deck
Definition of proportion
Definition of proportion
Relationship between 2 quantities and how they change
Define direct proportion
Define direct proportion
Two quantities increase/decrease at same rate
Direction of change in direct proportion
Direction of change in direct proportion
Both quantities change in same direction
Direct proportion: if one quantity doubles
Direct proportion: if one quantity doubles
The other quantity doubles too
Define inverse proportion
Define inverse proportion
One quantity increases as other decreases at same rate
Direction of change in inverse proportion
Direction of change in inverse proportion
Quantities change in opposite directions
Inverse proportion: if one quantity doubles
Inverse proportion: if one quantity doubles
The other quantity halves
Method for direct proportion problems
Method for direct proportion problems
Find rate per unit, then multiply
First step in inverse proportion problems
First step in inverse proportion problems
Work out what 1 unit would do
Money answer format in proportion problems
Money answer format in proportion problems
Write in pounds to 2 decimal places
Common contexts for inverse proportion
Common contexts for inverse proportion
Time, people, and work
How to verify proportion problem answers
How to verify proportion problem answers
Check if answer makes logical sense