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### Course: Arithmetic (all content)>Unit 3

Lesson 9: Division intro

# The idea of division

Sal uses an array and understanding of multiplication to divide. Created by Sal Khan.

## Want to join the conversation?

• How was division made or created by people?
• First you need to create addition, and from addition, you create multiplication (to make additions faster). If you have multiplication, you have division, because it's the same thing, in one direction and the other in the opposite direction.
• Is multiplication a switch for division like 24/3=8 and 8*3=24
• Yes multiplication is a switch for division
• Can you get into negative number's by dividing?
• is divison the same as multiplucation?
• Yes, division is multiplication, but they are not the same. Division is multiplication but backwards. Here's an example of the multiplication and division.
Multiplication: 12x10=120
Division: 120/10=12
So there you go
• How was division created by people?
• It used to be for accountants, (a big fancy word for people who count money) but people found it helpful so they started using it in day-to-day sitations!
• this helped me alot! Thanks!
• How would you Divide 1 by 0?