Wednesday, November 20th
Sparkplug Agenda• Make game board• Unit 3 Review Game
Tyriese has blueprints for his future mansion. The scale for the blueprints is 1 inch = 6 feet. How many feet would the actual length of the mansion be if it is shown as 8 inches on the blueprints?
1. Write the scale as a ratio.
2. Write a proportion.3. Solve the proportion.
Unit 3 Review GameRatios
and Rates
Scale Drawings
and Models
Proportions
Proportional
Relationships
Percent Proportio
n
Percent of
Change
Unit 3 Review GameRatios &
Rates
Scale Drawings &
ModelsProportions Proportional
RelationshipsPercent
ProportionPercent of
Change
100
200
300
400
500
100
200
300
400
500
100
200
300
400
500
100
200
300
400
500
100
200
300
400
500
100
200
300
400
500
Ratio & Rates 100
Answer: 3/11
9 Students out of 33 students
Express as a fraction in simplest form
Ratio & Rates 200
Answer: 3/4
12 hits out of 16 times at bat
Express as a fraction in simplest form
Ratio & Rates 300
Answer: 5/3
30 hours to 18 hours
Express as a fraction in simplest form
Ratio & Rates 400
Answer: 1/4
5 quarts to 5 gallons
Express as a fraction in simplest form
Ratio & Rates 500
Answer: 5/24
10 inches to 4 feet
Express as a fraction in simplest form
Scale Drawing & Models 100
Answer: 40
On a map of Florida the scale is 1in = 20 mi.
If the distance between Tampa and St. Petersburg is 2 inches, how many miles is
that?
Scale Drawing & Models 200
Answer: 92.8 ft
A model airplane is built using a 1:16 scale. On the model, the length of the wing span is 5.8 feet. What is the actual length
of the wing?
Scale Drawing & Models 300
Answer: 51 feet
A builder is designing a swimming pool that is 8.5
inches on the scale drawing. If the scale is 1in = 6ft what is the
actual length of the pool?
Scale Drawing & Models 400
Answer: 1/48
A set of landscape plans shows a flower bed that is 6.5 inches wide. The scale on the plan is 1 in = 4 ft
What is the scale factor?
Scale Drawing & Models 500
Answer: 1in = 4 ft
A man in a photograph is 1.5 inches in height. If the man is 6 ft tall, what is the
scale?
DailyDouble!
Proportions 100
Answer: Yes
Determine if the pair of ratios form a proportion:
5.3 2.7
15.9 8.1,
Proportions 200
Answer: x = 1.4
Solve the proportion:
7 x
45 9=
Proportions 300
Answer: a = 0.8
Solve the proportion:
a 4
0.28 1.4=
Proportions 400
Answer: 5 boxes
Solve the proportion:
8 pencils in 2 boxes
20 pencils in x boxes
Proportions 500
Answer: y = $25.20
Solve the proportion:
y dollars for 5.4 gallons
14 dollars for 3 gallons
Proportional Relationships100
Does the function table below show a proportional relationship?
If so, what is the
Constant of proportionality?
Answer: yes : 5
Proportional Relationships 200
Answer: yes : 1
Does the graph show a proportional relationship? If so, what is the constant
of proportionality?
Proportional Relationships 300
Answer: no
Does the graph show a proportional
relationship? If so, what is the constant of
proportionality?
Proportional Relationships 400
Answer: no
Does the table below show a proportional relationship? If so, what is the constant of proportionality?
Timehours
0 1 2 3 4 5
Paperflowers
0 10 20 30 45 50
Proportional Relationships 500
Answer:
If the constant of proportionality of a situation is equal to 5, how would you write an equation in
terms of y and x?
y = 5x
Percents Proportion 100
Answer: 45%
72 is what percent of 160?
Percents Proportion 200
Answer: 50
36 is 72% of what number?
Percents Proportion 300
Answer: 126
What is 84% of 150?
Percents Proportion 400
Answer: 112
14 is 12½ % of what number?
Answer: 411.4
Percents Proportion 500
36 is 8¾% of what number?
Percent of Change 100
Answer: 29.7% decrease
Find the percent of change from $9.25 to $6.50. State if
increase or decrease
Percent of Change 200
Find the percent of change from 75 minutes to 100 minutes. State if
increase or decrease
Answer: 33.3% Increase
Percent of Change 300
Answer: 600% Increase
Find the percent of change from 15 songs to 105 songs. State if increase or decrease
Percent of Change 400
Answer: 5.5 years
Using the formula I=prt, determine how long it would take to earn $495 interest on $2,000 invested at a rate of
4.5%
Percent of Change 500
Answer: 4.75%
Using the formula I=prt, determine the interest rate on
$1600 invested for 6 years which earned $456 in interest
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