Ratios and Rates

Unit 4 – Finding Unknown Terms in Ratios

Finding Unknown Terms ExampleFind the missing term. Show your work.

Since 3 × 4 = 12, then use 8 × 4 to find the missing term.

Finding Unknown Terms ExampleFind the missing term. Show your work.

Since 7 × 7 = 49, figure out ? × 7 = 7 to find the missing term.

Writing Ratios from Tables ExampleA fruit seller packs apples and oranges into baskets. The ratio of the number of apples and the number of oranges is the same for all baskets. The table shows the number of fruits in the basket. Complete the table.

1. How many oranges are packed into 1 basket? 2. Express the ratio of the number of apples to the number of oranges in

simplest form. 3. How many apples are packed into 2 baskets? 4. How many oranges are packed into 3 baskets? 5. How many apples and oranges are packed into 10 baskets?

2 oranges

5 to 210 apples

6 oranges

50 apples and 20 oranges

Writing Ratios from Tables Independent Practice

Sam used beads to make bracelets. Each bracelet has the same number of red beads and yellow beads. The table below shows the number of beads used to make the bracelets. Complete the table.

1. How many red beads are used in 1 bracelet? 2. How many yellow beads are used in 1 bracelet? 3. Express the ratio of the number of red beads to the number of yellow

beads in simplest form. 4. How many red beads are used in 3 bracelets? 5. How many yellow beads are used in 12 bracelets?

8 red beads15 yellow beads

8 to 1524 red beads

180 yellow beads