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Prime Numbers

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Videos, stories and solutions to help Grade 4 students learn about prime numbers.

What is a prime number?
A prime number is a number greater than 1, which is only divisible by 1 and itself.
The first few prime numbers up 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.

Prime Numbers
Prime Numbers

Factors and Prime Numbers
Definition of a prime number
A prime number is a positive whole number with exactly two factors, which are one and itself


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