# Unit 5: Rational number arithmetic

## Lesson 1: Interpreting negative numbers

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Missing numbers on the number line examplesComparing rational numbers
Practice
Missing numbers on the number lineGet 3 of 4 questions to level up!
Order rational numbersGet 3 of 4 questions to level up!

## Lesson 2: Changing temperatures

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Practice
Adding negative numbersGet 5 of 7 questions to level up!

## Lesson 3: Changing elevation

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Adding negative numbers on the number lineNumber equations & number linesAdding fractions with different signs
Practice
Signs of sumsGet 5 of 7 questions to level up!
Adding negative numbers on the number lineGet 5 of 7 questions to level up!
Number equations & number linesGet 3 of 4 questions to level up!

## Lesson 4: Money and debts

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Rational number word problem: checking account

## Lesson 5: Representing subtraction

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

## Lesson 6: Subtracting rational numbers

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Interpreting numeric expressions exampleAbsolute value as distance between numbers
Practice
Adding & subtracting negative fractionsGet 5 of 7 questions to level up!
Absolute value to find distanceGet 5 of 7 questions to level up!
Adding & subtracting rational numbersGet 3 of 4 questions to level up!

## Lessons 1-6: Extra practice

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No videos or articles available in this lesson
Practice
Adding & subtracting negative numbersGet 5 of 7 questions to level up!
Addition & subtraction: find the missing valueGet 3 of 4 questions to level up!
Equivalent expressions with negative numbersGet 3 of 4 questions to level up!

## Lesson 7: Adding and subtracting to solve problems

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Interpreting negative number statementsNegative number word problem: Alaska
Practice
Interpreting negative number statementsGet 3 of 4 questions to level up!

## Lesson 9: Multiplying rational numbers

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Why a negative times a negative makes senseWhy a negative times a negative is a positiveMultiplying negative numbers review
Practice
Multiplying negative numbersGet 3 of 4 questions to level up!

## Lesson 10: Multiply!

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Multiplying positive and negative fractions
Practice
Multiplying positive and negative fractionsGet 3 of 4 questions to level up!

## Lesson 11: Dividing rational numbers

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Dividing positive and negative numbersDividing negative numbers reviewDividing negative fractions
Practice
Dividing negative numbersGet 3 of 4 questions to level up!
Dividing positive and negative fractionsGet 3 of 4 questions to level up!
Dividing mixed numbers with negativesGet 3 of 4 questions to level up!

## Lesson 12: Negative rates

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Interpreting multiplication & division of negative numbers
Practice

## Lesson 13: Expressions with rational numbers

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Substitution with negative numbersOrdering expressionsNegative signs in fractionsExpressions with rational numbers
Practice
Substitution with negative numbersGet 5 of 7 questions to level up!
Ordering negative number expressionsGet 3 of 4 questions to level up!
Negative signs in fractionsGet 3 of 4 questions to level up!
Signs of expressionsGet 5 of 7 questions to level up!

## Lesson 14: Solving problems with rational numbers

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Intro to order of operationsRational number word problem: cab
Practice
Order of operations with negative numbersGet 5 of 7 questions to level up!
Rational number word problemsGet 3 of 4 questions to level up!

## Lesson 15: Solving equations with rational numbers

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No videos or articles available in this lesson
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