Highest common factor
Lesson 5 / 19
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Lesson outcome
I can use the prime factorisation of two or more positive integers to efficiently identify the highest common factor.
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Common factors can be found by comparing the products of their primes.
The highest common factor of two numbers can be found by comparing the prime factorisation of both numbers.
Sometimes a Venn diagram can help identify the highest common factor of two numbers.
The highest common factor of more than two numbers can be found using prime factorisation.
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