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Highest Common Factor

It represents just one of the many areas I cover in tuition which is always packed with great tips and recommendations whether you are doing KS2, KS3, GCSEs or A Level Education

Highest Common Factor – The approach:

There are 2 approaches.

OPTION 1

This can sometimes cause errors down the line

OPTION 2:

HCF.

- - - Look at the core numbers which is that you have the “requirements” for 4 bird tables and need to work out what is required for 10
    - The HCF of 4 & 10 is 2
    - Therefore, calculate what is needed for 2. In this case, that would be halving what you need for 4.
    - So for 2 you need 8 metres of wood, 2 wooden trays and 32 nails
    - Then work out “how many batches of 2s” you need to get for the required 10 tables
    - So this is 5 batches
    - The answer becomes (5 * 8 metres of wood); (5 * 2 wooden trays) and (5 * 32 nails)
    - 40 metres; 10 wooden trays; 160 nails