HCF and LCM (Edexcel GCSE Maths): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the Highest Common Factor (HCF)?
What is the Highest Common Factor (HCF)?
Largest number dividing into numbers
What is the Lowest Common Multiple (LCM)?
What is the Lowest Common Multiple (LCM)?
Smallest number that is a multiple
When expressing as a product of prime factors, what is the correct form?
When expressing as a product of prime factors, what is the correct form?
In a Venn diagram for HCF and LCM, which part gives the HCF?
In a Venn diagram for HCF and LCM, which part gives the HCF?
The intersection (common factors)
In a Venn diagram for HCF and LCM, which part gives the LCM?
In a Venn diagram for HCF and LCM, which part gives the LCM?
All factors in entire diagram
When writing prime factors in exams, what signs must you use in your final answer?
When writing prime factors in exams, what signs must you use in your final answer?
signs
When finding HCF, which power of common prime factors should you use?
When finding HCF, which power of common prime factors should you use?
The lowest power
When finding LCM, which power of prime factors should you use?
When finding LCM, which power of prime factors should you use?
The highest power
What does a factor tree help you find?
What does a factor tree help you find?
Prime factors of a number
How should the HCF compare to the original numbers?
How should the HCF compare to the original numbers?
HCF should be smaller than both
If is the HCF of and , what must contain?
If is the HCF of and , what must contain?
and exactly once
How should you write final answers using powers in exams?
How should you write final answers using powers in exams?
Using index notation