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Adding & Subtracting on Number Lines

Adding & Subtracting on Number Lines

Description:

This tutorial is aimed to help 7th grade students.

CCSS.MATH.CONTENT.7.NS.A.1
Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.

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Tutorial

Horizontal Number Lines

To master the standard above we will first look at how to add and subtract positive and negative numbers on a horizontal number line. To answer quiz questions 1-6 you will have to watch the video below called "Adding and Subtracting Integers on a Number Line." You are free to pause the video and take notes while you watch.

Adding and Subtracting Integers on a Number Line

Vertical Number Line

To master the standard above we will now look at how to add and subtract positive and negative numbers on a vertical number line. To answer the 4 quiz questions you will have to watch the video below called "Adding and Subtracting Integers using the hot air balloon model." You are free to pause the video and take notes while you watch.

Still need some more help?

Here are a few websites that explain how to add and subtract numbers on a horizontal and vertical number line in a different way.

Horizontal Number line

http://www.dummies.com/how-to/content/how-to-add-a...

Vertical Number Line

http://www.showme.com/sh/?h=5eEDq64