Examples for

# Common Core Math: Ratios & Proportions

In sixth and seventh grades, students extend their knowledge of fractions to include ratios and proportions. Students learn that while a fraction describes a relationship between a part and a whole, a ratio describes a relationship between parts. Students analyze and represent proportional relationships in a variety of ways: visually, verbally, numerically and algebraically. There are many opportunities to apply ratios and proportions in real-world contexts, including to convert between units of measurement and to compute unit rates. Students also work with percentages to compute interest, taxes, sale prices and tips.

### Common Core Standards

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Compute with ratios and percents in various contexts.

#### Determine the unit rate associated with a ratio (CCSS.Math.Content.7.RP.A.1):

#### Represent changes in quantities with percents (CCSS.Math.Content.7.RP.A.3):

#### Determine prices and tips using percentages (CCSS.Math.Content.7.RP.A.3):

Define and compute with percents and ratios.