HCF and LCM

What you'll learn

1. 1

   Imagine you have 12 red sweets and 8 blue sweets. You want to share them into bags so each bag has the same mix — that's the Highest Common Factor (HCF)!

2. 2

   What's the biggest number that divides both 12 and 8?

3. 3

   Let's find the HCF of 12 and 8 using a number line. Hop to the numbers that divide 12 and 8!

4. 4

   Find the HCF of 18 and 24. Let's do it step by step.

5. 5

   What is the HCF of 18 and 24?

6. 6

   Now think about LCM — Least Common Multiple. Imagine you have two clocks: one rings every 4 minutes, another every 6 minutes. When will they ring together? That's the LCM!

7. 7

   Find the LCM of 4 and 6 on this number line. Hop to the multiples!

8. 8

   Find the LCM of 6 and 9.