Decimals
Fractions
Multiples of a number are found by multiplying that number by 1, by 2, by 3, by 4, by 5, etc.
Example 1: List the first seven multiples of 9.
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Common multiples
Common multiples are multiples that are the same for two or more numbers.
Example 2: What are the common multiples of 2 and 3?
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Notice that common multiples may go on indefinitely.
Least common multiple
The least common multiple (LCM) is the smallest multiple that is common to two or more numbers.
Example 3: What is the least common multiple of 2 and 3?
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The smallest multiple common to both 2 and 3 is 6.
Example 4: What is the least common multiple of 2, 3, and 4?
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The least common multiple of 2, 3, and 4 is 12.
