COMPOSITE NUMBER

Composite Number

Definition Of Composite Number

A whole number that has factors other than 1 and the number itself is a Composite Number.

Example of Composite Number

4, 6, 9, 15, 32, 45 are some examples of composite numbers.

Video Examples: What is a composite number?

Solved Example onComposite Number

Ques: Identify the composite number.

Choices:

A. 19
B. 121
C. 37
D. 53
Correct Answer: B

Solution:

Step 1: Here, only 121 has factors other than 1 and itself.
Step 2: The factors of 121 are 1, 11, 121. So, 121 is a composite number.

Quick Summary

Composite numbers are whole numbers greater than 1.
They have more than two factors (1, itself, and at least one other factor).

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🍎 Teacher Insights

Use visual aids like factor trees to help students understand factorization and identify composite numbers. Provide plenty of examples and practice problems.

🎓 Prerequisites

Factors
Prime Numbers
Whole Numbers

Check Your Knowledge

Q1: Which of the following is a composite number?

A. 7 B. 11 C. 15 D. 17

Q2: Which of the following numbers is NOT a composite number?

A. 4 B. 6 C. 9 D. 13

Frequently Asked Questions

Q: Is 1 a composite number?
A: No, 1 is neither prime nor composite. It only has one factor, which is 1.

Q: Is 2 a composite number?
A: No, 2 is a prime number. Its only factors are 1 and 2.