Ratio and Proportion Intro

About 13 out of 20 homes have a personal computer.  On a street with 60 homes, how many would you expect to have a personal computer?

• 7 homes

• 39 homes

• 73 homes 

• 40 homes

The scale of a map says that 6 cm represents 15 km.

What distance on the map represents an actual distance of 6 kilometers?

• 3.6

• 2.5

• 2.4

• .42

Solve for x 

• x = 15

• x = 11

• x = 1/11

• x = 20

A word that describes equality or inequality of ratio.

• proportion

• ratio table 

• scaling up

A relationship between two quantities that can be expressed three different ways.

• rate

• ratio

• unit price

A table that shows equivalent ratios.

• unit rate table

• ratio table

Comparing one part to another part.

• part-to-part ratio

• part-to-whole ratio

• part-to-total ratio

Comparing one part to the total.

• part-to-part ratio

• part-to-whole ratio

Two ratios that are proportional.

• equivalent ratios

• equivalent units

To make equivalent ratios larger in size, or amount by multiplying.

• scaling up

• scaling down