Highest Common Factor (HCF) | Higher & Foundation | GCSE Maths Tutor

A video revising the techniques and strategies for finding the highest common factor of two numbers.
This video is part of the Number module in GCSE maths, see my other videos below to continue with the series.
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🔹 Practice the questions
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🔹 Review what you have learnt on the exam questions
Part 1 - Multiplying Decimals - • Multiplying Decimals (...
Part 2 - Product of Prime Factors - • Product of Prime Facto...
Part 3 - Highest Common Factor (HCF) - • Highest Common Factor ...
Part 4 - Lowest Common Multiple (LCM) - • Lowest Common Multiple...
Part 5 - Laws of Indices - • Laws of Indices - Part...
Part 6 - Fractional and Negative Indices - • Negative and Fractiona...
Part 7 - Fractional and Negative Indices (Higher Only) - • Negative and Fractiona...
Part 8 - Standard Form Conversions - • Standard Form Conversi...
Part 9 - Standard Form Calculations - • Standard Form Calculat...
Part 10 - Recurring Decimals (Higher Only) - • Writing Recurring Deci...
Part 11 - Fraction Calculations with Mixed Numbers - • Fraction Calculations ...
Part 12 - The Product Rule for Counting (Higher Only) - • The Product Rule for C...
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[@SA-ym6yj]

You've saved me! Felt like I was in a classroom thankyou so much

[@imalikumarasinghe4065]

What if they gave a question like they gave the lcm and hcf and find the 2 numbers. How do u find it??

[@fatfrommilk5122]

thank you, i got a mock today

[@rubyreadal6607]

thank you for this video but I have a question in a question saying how many pens in a pack do u need to get the same amount of pencils, should u use Lcm or HCF

[@hashirkhan3633]

LCM

[@rubyreadal6607]

@@hashirkhan3633 thx u

[@Mathspaperks1ks2]

Great vid super teaching skills you have!!

[@olusolaajayi5685]

ded

[@rosieweb9133]

im so confused at 8:21 why do we add 5 ?

[@fizzah4619]

is everything in the grade 5 playlist complete or are there more videos coming up for grade 4-5

[@TheGCSEMathsTutor]

Ariaa There are still a few topics left but not too many! 😁🙏🏼

[@fizzah4619]

@@TheGCSEMathsTutor thanks you when will you be uploading them

[@GCSEALevelMaths]

Great video sir good job

[@TheGCSEMathsTutor]

Thanks 😁👍🏼

[@Chloe-qv8sw]

sir could you plz tell, if we can use any multiple of a number or just specifics ones, (14:34) im a bit confused abt it, plz reply 😭

[@harveytheato753]

if you mean dividing it by 2 or by 3 or whatever, i think it doesnt matter which order you do it in, you will eventually get the same reults i think

[@dil820]

how would you do a question such as
'two numbers have these properties
both numbers are greater than 6
their hcf is 6
their lcm is 60
what are the two numbers'
please help i am stuck on doing these kinds of questions

[@taranmangat6688]

that specific example isnt possible i think but what i do is just find the factor pairs of the lcm number then calculate which of those pairs fit the other categories. This is a very late reply lol sry.

[@nooracademy_uz]

THANKS FOR THE VIDEO

[@NaziaAmjad-l1o]

Great video sir ! I was just wondering if you could tell me that if I do all questions from your revision guide pdf will I be able to solve past papers and get a grade 9 (ofc with good understanding and practice ) . Would be waiting for you reply , thx!

[@antonroy415]

16:17 lol i knew what it was instantly...18

[@TheGCSEMathsTutor]

Levelling up 💪🏼💪🏼

[@darnellbailey5038]

thank youu

[@loveyourself8458]

Uh how would you know when to use either method

[@Jajajaja-mg9ql]

All of them are optional so you can use any for a HCF question

[@loveyourself8458]

@@Jajajaja-mg9ql thank youuu

[@Jajajaja-mg9ql]

@@loveyourself8458 yw :)

[@loveyourself8458]

@@Jajajaja-mg9ql 🥰

[@Leox-xe6ip]

love your videos❤

[@liamrust3788]

😢

[@avohra1]

🎉

[@gracetetley]

Awesome!

[@TheGCSEMathsTutor]

Glad you think so!

[@louhall1623]

I have a question that I can't figure out: Given that A= 2^4 x 3 x 5^3 and B= 3^4 x 5^2 x 7^2, find the HCF of A and B.
the answers say that it is 3 x 5^2= 75. but then why would it not be 3^4 x 5^3? because that would get a different answer and how do you know what ones to use?

[@KayodeOluwaniyi-y3s]

thanks so much you are the best😀😀🙂😊