Solving Proportions
Percents
Ratios
Vocabulary
Circles
100

W-5=25

30

100
Eight is 5% of what number?
160
100
Skyzone sells tickets for their jump area. You buy a ticket for 4 hours and it costs $24. How much are you paying per hour to jump?
$6
100

What is an Origin?

The origin is a point on a graph with the ordered pair (0,0)

100
The radius of a circle is 28cm. What is the circle's diameter?
56cm
200

9x=900

110

200
Amanda got a 21/28 on her test. What is her percent score?
75%
200
What is the unit rate of the ratio 6:42 (6/42)?
1:7 or 1/7
200

Proportion

A proportion is an equation that states that two ratios are equal

200
The radius of a circle is 12in. What is the area of the circle?
144pi in.
300

C/12=48

576

300
What is 25% of 60?
15
300
Blake is able to get 27 miles on 1 tank of gas. How many miles can Blake travel on 6 tanks of gas?
162 miles
300

Inverse Operations

Inverse operations are pairs of operations that reverse the effects of each other

300
The radius of a circle is 16cm. What is the circle's circumference?
32pi cm
400

1.15+m=10

8.85

400
A restaurant bill comes to $34.60. You decide to leave an 15% tip. What is the total cost of the bill?
$39.79
400
A toy company can produce 9 toys in 3 hours. How many toys can they produce in 24 hours?
72 toys
400

Constant of proportionality ( What is the ratio for Constant of Proportionality)

In a proportional relationship. the ratio of all y-Values to their corresponding x-values is constant.

The ratio is Y/X

400
The diameter of a circle is 14ft. What is the circle's area?
49pi ft
500

S/250=

1,000

500
Kim bought a hat in California. The hat cost $15 before the 8% sales tax was applied. How much did Kim pay for the hat after taxes were added?
Kim paid $16.20
500
You paid $28.00 for 8 gallons of gasoline. How much would you pay for 15 gallons of gasoline?
You would pay $52.50
500

Direct Variation

A situation represent a direct variation if the ratio between the y value and its corresponding x-value is constant for every point. h=0.25

500
The circumference of the circle at the center of a basketball court is 37.68 feet. Find the area of the circle at center court. Use 3.14 for pi.
The area of the circle is 113.04
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