Ratios
Unit Rate
Rates
Miscellaneous
Proportions
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.
What is 2/5 or 4/10
100
George read 126 pages of a book in 18 minutes. How many pages did he read in 1 minute?
7 pages per minute
100
5 shovels of sand are mixed with 4 shovels of gravel to make cement. What is the number of shovels of gravel needed for 45 shovels of sand.
What is 36?
100

How do you determine if a graph is proportional?

It must be a straight line, through the origiin.

100

Solve for x. x/6 = 6/9

What is 4

200
Write a unit rate for this situation: 310 heartbeats per 5 minutes
62 heartbeats/minute
200
The science materials cost $65.70 to do the experiment. If 9 students participated in the experiment, what was the unit cost per student?
$7.30
200
Ari can walk 2 miles in 40 min. What is the amount of time it will take him to walk 4 miles.
What is 80 min.?
200

What is the fancy name of a 4 quadrant graph?

A coordinate plane
200

Solve for x. 3/8 = 15/x

What is 40

300
The recipe calls for 2 eggs for every 8 cups of flour. How many eggs are needed with 40 cups of flour?
10 eggs
300
The toys cost $69.95 for 5 models. What is the unit rate for each model toy?
$13.99 per model toy
300

Paul used 12 black tiles and 15 white tiles for a pattern. What is the ratio of black tiles to white tiles in simplest form?

4/5 

300

Define slope.

Rise / Run. The change in Y over the Change in X.

300

Solve for x. 7/11 = 33/x

What is 51.85

400
There are 40 rabbits in a cage. The ratio of white rabbits to grey rabbits is 3:7. How many white rabbits are in the cage?
12 white rabbits
400
A factory can produce mousetraps at a rate of 1500 traps in 3 hours. What is the unit rate per hour?
500 traps per hour
400

Rose spent $2.00 for 20 pieces of gum. Joe spent $1.50 for 10 pieces of gum. Who got the better deal and why?

Rose got the better deal. She got one piece for $0.10 and Joe spent $0.15 for one piece.

400

How can you tell on a table if there is a constant rate if change?

By checking to see if all the x's grow or decrease at the same rate as well as the y's.

400

Solve for x. x/6.5 = 16/19.5

What is 5.3

500
There are 75 mice in a cage. The ratio of pink mice to black mice is 2:3. How many black mice are in the cage?
45 mice
500
Hillary earned $45 babysitting. If she babysat for 6 hours, what was her rate per hour?
$7.50 per hour
500

Larry can type 225 words in 3 minutes. How many words can he type in 10 minutes?

750 words

500

Direct Variation taught us the formula, y = kx. What do those variables stand for, and why is this formula important?

y is the y - coordinate, x is the x - coordinate, and k is the rate of change or otherwise known as our slope. It allows us to graph lines now instead of points only.

500

Solve for x. x/4.81 = 23.9/15.2

What is 7.56

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