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MIDDLE SCHOOL

Mathematics (Grade 7)

The Number System

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The Number System: Adding and Subtracting Rational Numbers

Adding Rational Numbers Using Number Lines

Description

Subject: Math

Chapter: Adding and Subtracting Rational Numbers

CCSS Alignment: 7.NS.A.1.a, 7.NS.A.1.b, 7.NS.A.1.c...

Transcript

Imagine you are helping your grandma raise money for a community event by tracking snack sales on a number line.

Zero means no money.

At the start, the total was −3 dollars because money was spent on supplies, so you mark -3 as the starting point.

This amount is a rational number and can be shown on a number line. When adding...