RATIONAL NUMBERS, GCF, AND LCM
The number system that we know is called the “Real Number System”. One set of numbers that are a subset of the “real numbers” is called the rational numbers. Rational Numbers are numbers that can be written in fraction form where each part of the fraction is an integer.
Prime factorization is a way to write a number as a product of prime numbers. To find the Greatest Common Factor (GCF) of two numbers, apply prime factorization by finding all the common factors in each prime factorization, then multiplying them.
To find the Least Common Multiple (LCM) of two numbers, apply prime factorization by finding all the prime factors in each prime factorization, then multiplying the highest occurrence of each different factor.
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Rational Numbers – Recipes (02:54)
Prime Factorization
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 Prime Factors |
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Greatest Common Factor (Prime Factorization)
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The Distributive Property (03:37) | Greatest Common Divisor |
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 Click on the icon to find and practice topics for this unit. |
| Unit 2 Prime Factorization Worksheet |
| Unit 2 Greatest Common Factor Worksheet |
| Unit 2 Prime Factorization to find LCM and GCG Worksheet |