How to find the Highest Common Factor (2026/27 exams)

Описание: ⭐️ Check out our website https://www.cognito.org/ ⭐️

** WHAT'S COVERED **
1. Defining the Highest Common Factor (HCF).
2. Finding the HCF by listing factors of two numbers.
3. Finding the HCF using prime factorisation.
Identifying common prime factors from the lists.
How to handle prime factors that appear multiple times.

** EXAM BOARD INFO **
Suitable for courses across the world.
In the UK:
KS3 - Only need to know the first method (up to 1:55)
GCSE Foundation - Only need to know the first method (up to 1:55)
GCSE Higher - All suitable

** CHAPTERS **
0:00 Introduction to Highest Common Factor (HCF)
0:26 Method 1: Listing Factors
1:09 Listing Factors Practice: 12 and 18
1:56 Method 2: Using Prime Factors
2:40 Prime Factors - Handling Repeated Factors
3:15 Prime Factors Practice: 28 and 42
3:57 Prime Factors Practice: 132 and 420

** PLAYLISTS **
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