HCF & LCM using a Venn Diagram

Curriculum support20 mins£3

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Key takeaways
Define factors, multiples and prime numbers
Express a number as a product of its prime factors
Use a venn diagram to find the HCF and LCM of two numbers.  
Shahriyar HajghassemHost: Shahriyar is a Maths Teacher at a School in Northwest London, teaching years 7 to 11. He graduated from the University of Warwick in 2013 and set off to China for two years teaching IGCSE and A-Level Economics.

Students will be able to define what is meant by factors and multiples and in turn use prime factorisation (factor trees) and Venn diagrams to find the Highest common factor and Lowest common multiple of two numbers. Students will then be able to apply this skill to worded problems. The relevance of prime factorisation to the real world is very important to people who try to make (or break) secret codes based on numbers. That is because factoring very large numbers is very hard, and can take computers a long time to do. If you want to know more, the subject is "encryption" or "cryptography".

Safeguarding reminder:The safety of your child is of the utmost importance. All of our classes are pre-recorded to remove any concerns around live participation. For reruns of our past live classes, students' webcams and microphones were disabled and only the chat history, if participation was requested, is visible.

Suitable for:

Suitable for advanced students in Years 8-9 and intermediate students in Years 10-11.  This is an important topic in Maths, and hence revision of this class is warranted.  

Class requirements:
You will need a laptop or device with internet connection to watch the class, as well as a pen and notepad for taking notes.
What to expect:

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