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## Countdown to Exams - Day 7- Prime factor decomposition, HCF and LCM

Today we are looking at the topics of Prime factor decomposition, HCF and LCM. We take a look at how to break down numbers into products of their primes and then use the information to calculate the HCF and LCM of two or more numbers.

It is important to be confident in breaking down numbers into a product of their primes as this provides the foundation for solving HCF and LCM problems. You may come across questions involving HCF and LCM that will not require you to carry out prime factor decomposition. These are normally involved in best buy problems.

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## Countdown to Exams - Day 6 - Prime numbers, Factors and Multiples

Today we are looking at the topics of Prime numbers, factors and multiples. We take a look at the definitions and properties of prime numbers, factors and multiples.

An important topic when looking to solve problems involving Highest common factor and Lowest common multiple. It can also prove useful when you need to divide by a double digit number.

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