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

Lesson 1: Multiplication intro

# Worked example: Whole numbers on the number line

Created by Sal Khan.

## Want to join the conversation?

• How can i learn my multipication facts/time tabels in a creative way?
• just use your drawling and make a time table and use like stars or things u love to drawl
• you can learn a lot of things in Kahn.
• It was his sole purpose when he had his epiphany.
• who created the number line and how
• John Wallis
The number line was created by John Wallis (1616-1703), an English mathematician that was investigating negative numbers during his time period. He had created this line to represent negative numbers in a simple manner.
• ummmm how do u do like times like big numders
• why is he on the number line one we are working on?
• Even with the video I'm still struggling. Does anyone have an easier way of doing this?
(1 vote)
• Can anybody help me sometime idont get it im new to it?
(1 vote)
• I'll help you out. Just ask me some questions and i'll show you how to figure them out.
(1 vote)
• What is a good way to do mental multiplication and division with big numbers?? I know all my times tables and all, but I'm not good at mental multiplication.
(1 vote)