Vocabulary
A comparison of two quantities by division.
Ratio
Write each ratio as a fraction in simplest form.
10 girls out of 24.
5/12
Express each rate as a unit rate, round to the nearest tenth, or cent.
$25.97 for 8 boxes.
$3.25/box
6/(2/5)
15
15/a=5/4
12
Use the scale 0.5 in = 10 feet to find the actual length of each room.
Kitchen (Drawing Length = 6 in)
Actual Length 120 feet.
A rate that makes a comparison to one of something.
Unit rate
Write each ratio as a fraction in simplest form.
6 red cards to 4 blue cars
3/2
Express each rate as a unit rate, round to the nearest tenth, or cent.
400 meters in 5 minutes.
80 m/min
(5/3)/10
1/6
m/6=18/15
7.2
Use the scale 0.5 in = 10 feet to find the actual length of each room.
Bathroom (Drawing Length = 4.25 in)
85 feet
Two quantities that have a constant ratio or rate.
Proportional
Write each ratio as a fraction in simplest form.
10 yards to 8 inches
(Remember to convert to the smaller measure)
45/1
Express each rate as a unit rate, round to the nearest tenth, or cent.
$175 for 4 concert tickets.
$43.75/ticket
1 1/10 miles in 1/3 hours.
3 3/10 mph
28/24=a/12
14
Use the scale 0.5 in = 10 feet to find the actual length of each room.
Living Room (Drawing Length = 7.5 in)
150 feet
The ratio of model measurements to actual measurements.
Scale factor
Write each ratio as a fraction in simplest form.
18 ounces to 3 cups.
3/4
Express each rate as a unit rate, round to the nearest tenth, or cent.
274 miles in 14 gallons.
19.6 miles/1 gallon
66 2/3%
2/3
16.5/21=5.5/t
7
Use the scale 0.5 in = 10 feet to find the actual length of each room.
Garage (Drawing Length = 12 in)
240 feet
Having the same measure.
Congruent
Write each ratio as a fraction in simplest form.
2 feet to 18 inches.
4/3
Express each rate as a unit rate, round to the nearest tenth, or cent.
8 pack of juice that costs $4.79.
$0.60/box
6 1/2%
13/200
4/9=9/x
20.25
A scale model of a car has a bumper that is 3.5 inches long. The scale on the model is 1 in = 2 feet. What is the actual length of the bumper?
7 feet