TERRIFIC Subtract Rational Numbers Fractions Decimals Integers Smartboard Slides Lesson teaches Subtracting Positive and Negative Rational Numbers, Adding Opposite, Finding Distance between two numbers, QUIZ, Independent Practice and Answer Key too. You'll love using this year after year! WARNING: You MUST have SMART Technologies SMART software, and a SMARTBOARD to teach from, to effectively download, open and use this Interactive Smartboard Lesson. Go to https://legacy.smarttech.com/en/produc