Counting strategies (AQA GCSE Maths): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
What are counting strategies?
What are counting strategies?
Systematic methods to find all combinations or arrangements
Being systematic in counting means
Being systematic in counting means
Following an organized approach, not listing randomly
First step in systematic listing method
First step in systematic listing method
Identify the categories or positions you're working with
How many 3-digit numbers from cards 4, 5, 6?
How many 3-digit numbers from cards 4, 5, 6?
6 possible combinations
How many badge combinations: 3 colors × 3 shapes?
How many badge combinations: 3 colors × 3 shapes?
9 combinations ()
5 teams play each other once: total matches?
5 teams play each other once: total matches?
matches
Why show systematic working in exams?
Why show systematic working in exams?
Partial marks for correct method even if answer is wrong
How to avoid double-counting?
How to avoid double-counting?
Use systematic order; each combination appears only once
When to use counting strategies?
When to use counting strategies?
Multiple categories, tournaments, 'how many ways' questions
Key principle for successful counting
Key principle for successful counting
Be systematic, not random
