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What is a prime number?

How do I find a prime?

Prime numbersPrime numbers are numbers that are only divisible by themselves and 1. Learn more about their properties, and see some examples.

Recognizing prime and composite numbersCan you recognize the prime numbers in this group of numbers? Which are prime, composite, or neither?

Finding a percentage.

What is an exponent (indice)?

Percent of a whole numberThere are several different ways to solve problems involving percentages, decimals, and fractions. Watch as Sal finds the percentage of a whole number.

Intro to exponentsSal shows how exponents are repeated multiplication

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