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# Unit 18: Add and subtract negative numbers

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## About this unit

Learn about numbers below 0 and how they relate to positive numbers. Add, subtract, multiply and divide negative numbers.

### Practice

- Negative numbers on the number lineGet 5 of 7 questions to level up!
- Interpreting negative numbersGet 5 of 7 questions to level up!

### Practice

- Negative symbol as oppositeGet 3 of 4 questions to level up!

### Practice

- Negative fractions on the number lineGet 3 of 4 questions to level up!

### Practice

- Finding absolute valuesGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

### Learn

### Practice

- Zero pairsGet 3 of 4 questions to level up!
- Add with integer chipsGet 3 of 4 questions to level up!
- Adding negative numbers on the number lineGet 5 of 7 questions to level up!

### Practice

- Signs of sumsGet 5 of 7 questions to level up!
- Adding negative numbersGet 5 of 7 questions to level up!

### Learn

### Practice

- Subtract with integer chipsGet 3 of 4 questions to level up!
- Interpret negative number addition and subtraction expressionsGet 3 of 4 questions to level up!

### Learn

### Practice

- Understand subtraction as adding the oppositeGet 3 of 4 questions to level up!
- Subtracting negative numbersGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 720 Mastery points

Level up on the above skills and collect up to 160 Mastery points

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Level up on all the skills in this unit and collect up to 1,600 Mastery points!