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

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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.
These are the calculators that I recommend:
Casio fx-83GTX Scientific Calculator, Black - amzn.to/2P2cyGG
Casio Fx-991ex Scientific Calculator Fx 991 Ex - New + 552 Function - Classwiz - amzn.to/2sw2Moz
🔹 Watch the video
🔹 Make notes
🔹 Practice the questions
🔹 Mark your work
🔹 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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Music: That Day
Musician: Jef

Опубликовано:

30 окт 2019

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Комментарии : 37

@SA-ym6yj 3 года назад

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

@fatfrommilk5122 2 года назад

thank you, i got a mock today

@nooracademy_uz 3 года назад

THANKS FOR THE VIDEO

@imalikumarasinghe4065 10 месяцев назад

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

@Mathspaperks1ks2 2 года назад

Great vid super teaching skills you have!!

@olusolaajayi5685 День назад

ded

@user-xx3ey9zw2t 2 месяца назад

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!

@Leox-xe6ip 2 месяца назад

love your videos❤

@GCSEALevelMaths 2 года назад

Great video sir good job

@TheGCSEMathsTutor 2 года назад

Thanks 😁👍🏼

@rubyreadal6607 3 года назад

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 3 года назад

LCM

@rubyreadal6607 3 года назад

@@hashirkhan3633 thx u

@darnellbailey5038 2 года назад

thank youu

@fizzah4619 4 года назад

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

@TheGCSEMathsTutor 4 года назад

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

@fizzah4619 4 года назад

@@TheGCSEMathsTutor thanks you when will you be uploading them

@rosieweb9133 2 месяца назад

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

@gracetetley 2 года назад

Awesome!

@TheGCSEMathsTutor 2 года назад

Glad you think so!

@Chloe-qv8sw Год назад

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 Год назад

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 2 года назад

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 Год назад

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.

@avohra1 7 месяцев назад

🎉

@loveyourself8458 3 года назад

Uh how would you know when to use either method

@Jajajaja-mg9ql 3 года назад

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

@loveyourself8458 3 года назад

@@Jajajaja-mg9ql thank youuu

@Jajajaja-mg9ql 3 года назад

@@loveyourself8458 yw :)

@loveyourself8458 3 года назад

@@Jajajaja-mg9ql 🥰

@antonroy415 2 года назад

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

@TheGCSEMathsTutor 2 года назад

Levelling up 💪🏼💪🏼

@louhall1623 11 месяцев назад

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?