How do you determine the highest common factor (HCF) of two numbers?
GCSE Secondary Maths Age 13-17 - Number: LCM and HCF - Explained
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Mathematics, Science
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10th - 12th Grade
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Hard
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The video tutorial explains how to find the lowest common multiple (LCM) of 40 and 56 by using factor trees to break down each number into its prime factors. It then combines these factors to calculate the LCM, which is 280. The tutorial also covers finding the highest common factor (HCF) of two numbers, A and B, by identifying and multiplying their common prime factors, resulting in an HCF of 60. The video provides step-by-step guidance and allocates marks for each part of the problem-solving process.
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OPEN ENDED QUESTION
3 mins • 1 pt
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OPEN ENDED QUESTION
3 mins • 1 pt
What is the highest common factor (HCF) of A and B, where A is equal to 2 cubed times 3 times 5 and B is equal to 2 squared times 3 times 5 squared?
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