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Ratios/Rates
Proportions
Proportional Relationships
Scale Factor
Unit Ratio
100
In a drawing, there are three circles, four stars, and three triangles. What is the ratio of stars to the total number of shapes? Simplify your answer.
What is 2/5?
100

Solve for the variable n is the relationship is proportional?

5/8=n/48

What is n=30?

100

On a graph, the line has to go through what to be proportional?

What is the origin or point 0,0

100

The scale factor for a map is 1 cm. = 200 km. On the map, Boston is 1.5 cm. from New York. How far is Boston from New York?

What is 300 km.?

100

Find the unit rates for the following problems: 

27 calls in 9 hours 

What is 3 calls per 1 hour

200
Ari can walk 2 miles in 40 min. How long will it take him to walk 5 miles?
What is 100 min.?
200

5 bags of sand are mixed with 4 bags of gravel to make cement. How many bags of gravel are needed for 45 bags of sand?

What is 36?

200

Another name for constant of proportionality is..

What is unit rate

200

Jeff drew a model of an airplane with a wing of 5 in. He used a scale of 1 inch: 5 feet. Find the actual length of the wing.

What is 25 ft.?

200

Spenser bought 5 chocolate bars for $3.70. What is the unit price for 1 chocolate bar?

What is $0.74 per 1 chocolate bar

300

Paul used 6 black tiles and 12 white tiles for a pattern. What is the unit ratio of black tiles to white tiles? 

What is 1:2?

300

30 buses can carry 1500 people. How many people can be carried by 5 buses?

What is 250?

300

What does the variable K represent in the equation 

y=kx

What is constant of proportionality/ unit rate?

300

In a picture, a snake measures 4 in. long. The scale is 1 in. = 2 ft. Find the actual length of the snake.

What is 8 ft.?

300

If you can buy 24 eggs for $8.64, what is the unit price?

What is $0.36 per egg?

400
The equation "t = 6.2h" gives the time in hours, "t", that a candle will burn if the candle has a height in inches of "h." How long will it take for a 4 inch candle to burn?
What is 24.8 hrs.?
400

It takes 2 trucks to carry 80 crates. What is the number of crates 8 trucks can carry?

What is 320?

400

Name the three methods you can use to identify a proportional relationships 

What is a table, a graph, an equation?

400

Two towns are 20 miles apart. On a map with the scale 1 inch = 40 miles, how many inches apart are the towns?

What is 1/2 in.?

400

21 yards of yarn costs $42. What is the price per yard?

What is $2 per yard

500
The equation "d = 55t" gives the distance in miles, "d", that a car can travel in "t" hours. How long will it take to go 247.5 miles?
What is 4.5 hrs.?
500

Solve for the variable n is the relationship is proportional?

6/8 =n/20

What is 15?

500

What are the two characteristics a graph of proportional relationship must have?

What is a straight line and passes through the origin (0,0)?

500

On Fiona's map, the distance from her office to her house measures 3.5 in. The map scale is 1 in. = 16 mi. If Fiona drives back and forth, how many total miles will her round trip be?

What is 112 miles?

500

You took a trip to the mountains and traveled 486 miles. It took you 18 gallons of gas to get there. How many miles per gallon would it go?

What is 27 miles per gallon