Composite Numbers
Maths: Year 5 & 6 National Curriculum, topic 1.3.5
Composite Numbers
A composite number is a number which is the product (multiplication) of two numbers that are NOT 1 and the number itself. In other words, a composite number is a number which is NOT a prime number.
Composite numbers
- 18 is a composite number.
- 18 is the product of 3 and 6 (3 × 6 = 18).
- 24 is a composite number.
- 24 is the product of 2 and 12 (2 × 12 = 24).
- 22 is a composite number.
- 2 is the product of 2 and 11 (2 × 11 = 22).
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Non-composite numbers
- 11 is NOT a composite number. You can only divide 11 by 1 and 11 without leaving a remainder.
- 13 is NOT a composite number. You can only divide 13 by 1 and 13 without leaving a remainder.
- 23 is NOT a composite number. You can only divide 23 by 1 and 23 without leaving a remainder.