# Unit 4: Proportional relationships and percentages

## Lesson 2: Ratios and rates with fractions

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Rates with fractionsGet 3 of 4 questions to level up!

## Lesson 3: Revisiting proportional relationships

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Proportion word problemsGet 3 of 4 questions to level up!

## Lesson 5: Say it with decimals

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Fraction to decimal: 11/25Worked example: Converting a fraction (7/8) to a decimal
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Converting fractions to decimalsGet 3 of 4 questions to level up!

## Lesson 7: One hundred percent

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Rational number word problem: ice
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Percent problemsGet 3 of 4 questions to level up!

## Lesson 8: Percent increase and decrease with equations

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Equivalent expressions with percent problemsGet 3 of 4 questions to level up!

## Lesson 10: Tax and tip

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Interpreting linear expressions: diamonds
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Tax and tip word problemsGet 3 of 4 questions to level up!

## Lesson 11: Percentage contexts

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Percent word problem: guavasPercent word problems: tax and discount
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Discount, markup, and commission word problemsGet 3 of 4 questions to level up!