How to find LCM and HCF of two numbers

Take numbers 24 and 36 for example.First we'd need to find the prime factors of each of the two numbers which can be done through factor trees24 = 23x 336 = 22 x 32What we do next is set of a venn diagram of the prime factors for these numbers. If the number is in both lists, we write it down in the intersection and then cross it off our list of prime factors. We do this for all factors until all of them are crossed off.LCM Is each of the numbers in the diagram multiplied togetherHCF is each of the numbers in the intersection multiplied together

NI
Answered by Nafi I. Maths tutor

3373 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

There are 30 yellow sweets and 10 black sweets in a bag. Two sweets are taken out at random without replacement. Work out the probability that the two sweets are the same colour.


Solve 3x - 5 = 13


There are 9 counters in a bag. 7 of the counters are green. 2 of the counters are blue. Ria takes at random two counters from the bag. Work out the probability that Ria takes one counter of each colour. You must show your working.


Three whole numbers are each rounded to the nearest 10. The sum of the rounded numbers is 70. Work out the maximum possible sum for the original three numbers.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning