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MIDDLE SCHOOL

Mathematics (Grade 7)

The Number System

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The Number System: Understanding Rational Numbers

Opposites and Absolute Value

Description

Opposites and Absolute Value

Introduction
Opposites and absolute value help us understand and describe numbers on the number line, especially when dealing with positive and negative values. These concepts are useful for comparing values, measuring distances...

Transcript

Imagine a building with an elevator. The lobby or ground level is 0. Two floors down is the parking garage at -2, and two floors up is the game room at +2.

This building works like a number line: 0 marks the ground level. Floors above 0 are positive and appear to the right, while floors below 0 are negative and appear to the left on the nu...