Sometimes you are given numbers expressed as a product of prime factors. For example, 8 = 2 3 and 90 = 2 × 3 2 × 5. If you want to find the LCM and HCF in an exam, we can use prime factor form to ...

This KS3 HCF LCM maths worksheet is ideal for homework or classwork. As the name suggests, it focuses on highest common factor and lowest common multiple. The objective is simply to be able to find ...

This lesson plan takes the ideas of HCF and LCM (highest common factor and lowest common multiple), and deals with them together. In maths, we often teach these concepts separately, but looking at ...

The LCM of two or more numbers is the smallest number that is a multiple of all the given numbers. To find the LCM: The HCF, also known as the GCD (Greatest Common Divisor), is the largest number that ...

SSC conducts CGL exam once every year for recruiting the Grade-‘B’ & ‘C’ officers in various government offices and ministries. Quantitative Aptitude is one subject with the other three. HCF & LCM is ...

It would take a long time to write out all the factors and multiples of 24 and 180 and compare the lists and it would be easy to make a mistake. A more efficient method is to use prime factors. Using ...

Think about how we normally find HCFs and LCMs. Take two numbers, x and y. (I'm also not a fan of algebra, but bear with me here.) For these two numbers there must a least common multiple 'l' that is ...

In the CAT 2020 exam, Quantitative Aptitude Section is one of the most time consuming sections out of other parts. And considering the range of topics that candidate have to solve in the exam, HCF and ...