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## Pre-algebra

### Course: Pre-algebra>Unit 1

Lesson 1: Factors and multiples

# Identifying multiples

Use skip counting and division to identify multiples of 9. Created by Sal Khan.

## Want to join the conversation?

• Reviewing the fundamentals to get a better understanding of machine learning!
• how do you get a muliple of 1
• Every number is a multiple of 1. But I is not a multiple of every number.
• What is infinity a multiple is it all numbers?
• Infinity is a number that doesn't end.
• what is the difference between multiples and factors?
• They are opposites of each other.
Multiples are shown in a multiplication table. For example, multiples of 4 are: 0, 4, 8, 12, 16, 20, 24, etc.

Factors of a given number will divide evenly into the give number. For example, factors of 24 are: 1, 2, 3, 4, 6, 8, 12, and 24. Each of them divide evenly into 24.

Notice: 24 is a multiple of 4 which makes 4 a factor of 24.

Hope this helps.
• What are the multiples of 9?
• The multiples of 9 will have their digits add up to 9 or a multiple of 9. For example, 81 is a multiple of 9 because 8+1=9. 117 is a multiple of 9 because 1+1+7=9. 873 is a multiple of 9 because 8+7+3=18, and 18 is a multiple of 9 because 1+8=9
• What are the multiples of 5?
• A multiple of 5 will either end in 5 or 0 (from our base-10 system).