Transcript Mrs. Oberdick`s Jeopardy Review

Comparing and Scaling!
Vocabulary
Rates
Unit Rates
Comparisons
Proportion
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Vocabulary for $100
A special type of ratio
that compares two
unlike things.
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Vocabulary for $100
What is a rate?
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Vocabulary for $200
A rate in which one of the
units (usually written as the
second quantity) is equal to
1.
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Vocabulary for $200
What is a unit
rate?
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Vocabulary for $300
A part-to-whole ratio
that is always out of one
hundred.
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Vocabulary for $300
What is percent?
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Vocabulary for $400
The number used to
multiply both parts of a
ratio to produce an
equivalent ratio.
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Vocabulary for $400
What is scale
factor?
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Vocabulary for $500
An equation stating the
equality of two ratios.
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Vocabulary for $500
What is a
proportion?
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Rates for $100
The ratio of boys to girls in a class is
2 to 3.There are 12 boys in the class.
How many girls are in the class?
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Rates for $100
18 girls
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Rates for $200
Joel can drive
his car 450 miles at a
question
steady speed using 15 gallons
of gasoline. How many miles can he
drive on 45 gallons of gasoline?
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Rates for $200
1,350 miles
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Rates for $300
On a long dirt road leading to
question
camp, buses travel only 6 miles in
10 minutes. At this speed, how
long does it take the buses to travel
18 miles?
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Rates for $300
30 minutes
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Rates for $400
Leena makes $230 every two
weeks as a waitress at the
Mugwump Diner. How long will
it take her to save up $1000?
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Rates for $400
9 weeks
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Rates for $500
If a train is traveling at 1.25
miles per minute, what is its
speed in miles per hour?
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Rates for $500
75 mph
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Unit Rates for $100
What are the two unit
rates that can be written
from the following:
$1.89 for 3 lbs of apples
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Unit Rates for $100
Cost per pound,
Pounds per dollar
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Unit Rate for $200
There are 64 pretzels in a 16 ounce bag
of chocolate covered pretzels. How
many ounces does each pretzel weigh?
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Unit Rates for $200
0.25 ounces
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Unit Rates for $300
Tyrone can run the 100
yard dash in 11 seconds.
What is his speed?
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Unit Rates for $300
≈ 9.09 yards per
second
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Unit Rates for $400
Which is the better deal?
2-liter bottles of Orange Splash! 4
for $4.99 or
½ -liter bottles of Orange Splash!
$1.99 per 8-pack
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Unit Rates for $400
2-liter bottles of
Orange Splash! 4
for $4.99
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Unit Rates for $500
To make every 5 pounds of
cheese, you have to use 50
pounds of milk. Write an
equation relating pounds of milk
m to pounds of cheese c.
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Unit Rates for $500
10c = m
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Comparisons for $100
Identify the type of
statement:
There are 197 more eighth
graders than seventh
graders
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Comparisons for $100
Difference
Statement
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Comparisons for $200
Identify the type of
comparison:
About 220 of 987
th
students are 6 graders.
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Comparisons for $200
Part to whole
(Fraction)
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Comparisons for $300
Millie bought a DVD
player on sale for
$208. The original
prices was $320. What
percent did Millie save?
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Comparisons for $300
35%
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Comparisons for $400
A 12-pack of Bolda
Cola, usually $3, are on
sale for $2.55. What
percent savings is this?
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Comparisons for $400
15%
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Comparisons for $500
CD’s at BJ’s Music Notes
cost $8.50 plus 4% sales
tax. Write an equation to
represent the cost of any
number of CDs.
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Comparisons for $500
8.5n + .04(8.5n) = c
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Proportions for $100
Solve for x:
10 30

15 x
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Proportions for $100
45
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Proportions for $200
Solve for x:
6 10

21 x
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Proportions for $200
35
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Proportions for $300
Write a proportion for
the following problem:
Pedro walks 1 mile in 15
minutes. How far does he
walk in 90 minutes?
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Proportions for $300
1
x

15 90
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Proportions for $400
Write a proportion to solve
for x. Assume the
rectangles are similar:
6
2.3
x
11
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Proportions for $400
x
6

2.3 11
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Proportions for $500
Write a proportion to
represent the following:
Buttons cost $18 for 12
dozen buttons. How many
can be bought for $63?
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Proportions for $500
18 63

12 x
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