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### Course: Algebra basics > Unit 1

Lesson 1: Negative numbers- Intro to negative numbers
- Negative numbers on the number line
- Number opposites
- Number opposites
- Adding numbers with different signs
- Adding negative numbers
- Adding & subtracting negative numbers
- Subtracting a negative = adding a positive
- Subtracting negative numbers
- Multiplying positive & negative numbers
- Why a negative times a negative is a positive
- Why a negative times a negative makes sense
- Dividing positive and negative numbers
- Multiplying negative numbers
- Dividing negative numbers

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