Vocabulary
Unit Rate
Identifying and writing proportions
Solving Proportions
scale drawings and models
100

___figures have the same shape but not necessarily the same size.

Similar

100

Find the unit rate:

540 Feet in 90 Seconds

6 feet per seconds

100

Find an equivalent ratio to the given ratio. Then write a proportion.

10/12

20/24   30/36   40/48

100

Solve the following proportion.

4/6 = n/3

n = 2

100

A rectangular photo frame is 24 cm long and 9 cm wide. A frame that is similar in shape is 3 cm wide. Find the length of the frame

8 cm

200

A(n) _____is a ratio that compares two quantities measured in different units.

Rate

200

Find the unit rate

436 Miles in 4 Hours

109 Miles per Hour

200

Find an equivalent ratio to the given ratio. Then write a proportion.

9/15

18/30   27/45   36/60

200

Solve the following proportion.

2/a = 5/15

a = 6

200
A tree casts a 30 1/2 foot shadow at the time of day when a 2 foot stake casts a 7 2/3 foot shadow. Estimate the height of the tree.

about 8 feet

300
The ratio used to enlarge or reduce similar figures is a(n) ______.

Scale Factor

300

Find the unit rate and tell which is the better buy?

25 Gallons for $56  OR  15 Gallons for $32.05

25 gallons = $2.24

15 gallons = about $2.14

The 15 gallons would be the better buy.

300

Determine if the ratios are proportional.

21/14     18/12

These ratios are proportional.

300

Solve the following proportion.

b/1.5 = 8/3

b = 4

300

The Wright brothers' Flyer had a 48 inch wingspan. Carla bough a model of the plane with a scale factor of 1/40. What is the model's wingspan?

12.1 inches

400

A ____ is a proportional two-dimensional drawing of an object.

scale drawing
400

Find the unit rate and tell which is the better buy.

5 Gallons for $160  OR  9 Gallons for $315

5 gallons = $32

9 gallons = $35

5 gallons is the better buy

400

Determine if the ratios are proportional.

15/25    20/30

These ratios are NOT proportional.

400

Solve the following proportion.

7/2 = 70/w

w = 20

400

The distance from Austin to Houston on a map is 4.3 inches. The map scale is 1 inch:38 miles. What is the actual distance?

163.4 Miles

500

An equation stating that two ratios are equivalent is called a _____.

Proportion

500

Beatriz earned $197.50 for 25 hours of work. How much money did she earn per hour?

$7.90 per hour

500

Determine if the ratios are proportional.

9/27     6/20

These ratios are NOT proprotional.

500

Solve the following proportion.

16/11 = 96/x

x = 66

500

On a scale drawing, a driveway is 6 inches long. The scale factor is 1/24. Find the length of the actual driveway.

144 inches or 12 feet.

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