Introduction
Understanding factors and multiples helps us work with numbers easily — especially in division, multiplication, and simplifying fractions.
This lesson will teach you how to find the factors and multiples of a number and how to tell the difference between them.
What Are Factors?
Factors are numbers that divide exactly into another number without leaving a remainder.
🔹 Example:
Factors of 12 = 1, 2, 3, 4, 6, 12
(They all divide into 12 evenly)
We can say:
4 is a factor of 12 because 4 × 3 = 12
What Are Multiples?
Multiples are what you get when you multiply a number by 1, 2, 3, 4, etc.
🔹 Example:
Multiples of 5 = 5, 10, 15, 20, 25…
We can say:
25 is a multiple of 5 because 5 × 5 = 25
How to Tell the Difference
- Factors go into a number
(e.g. 3 is a factor of 15) - Multiples come from a number
(e.g. 30 is a multiple of 5)
💡 Tip:
- Factors are always smaller than or equal to the number
- Multiples are usually greater than or equal to the number

Time’s up
Summary
Here’s what you’ve learned:
- ✅ Factors divide a number exactly
- ✅ Multiples are the result of multiplying the number
- Use multiplication and division facts to help find them
- Factors are useful in simplifying fractions and solving division
- Multiples help in finding common denominators, solving time & money problems, and more
Keep practicing to spot factors and multiples quickly!