 # Composite and Prime Numbers

Examples, solutions, videos, stories and songs to help Grade 4 students learn about composite numbers.

Related Topics:
Math Worksheets

Prime and Composite Numbers
Prime numbers are numbers with exactly 2 factors.
Example:
Which of the following numbers are prime numbers?

Prime Numbers and Composite Numbers
A Prime Number can be divided evenly only by 1 or itself.
And it must be a whole number greater than 1.
Prime and Composite Numbers 1 to 100 - What are they? Prime number: has exactly 2 factors: 1 and itself.
Composite numbers: has more than 2 factors.
The number 1 is neither a prime nor a composite number.
The prime numbers from 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. 