Ratio, Proportion and Percents

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MATH
Ratio, Proportion and Percents
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Rates
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Conversions
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Proportions
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Similar Figures and Scale
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Probability and Odds
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Ratio
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Similar Figures and Scale
Probability and Odds
Conversions
Rates
Proportions
Ratio
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How do you change a rate into a unit rate?
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What is you make the denominator equal 1 by
dividing the numerator and denominator by the
denominator?
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I traveled 291 miles with 6 gallons of gas (in my
Prius). Change that to a unit rate (round to the
nearest tenth if necessary).
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What is 48.5miles/gallon?
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I paid 5.99 for 64oz of ice-cream. Find the
cost (to the nearest penny) per ounce.
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What is 0.09/oz?
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Change each to a unit rate to determine which is
the better deal A 2.05 for 16lb B 3.92
for 28lb
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What is choice A (0.13/lb)?
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Jerry threw 84 strikeouts in 10 games. Tom had
60 in 8 games. Who has the better strikeouts per
game average and by how much?
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Who is Jerry by 0.9 strikeouts per game?

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Change 0.254 to a percent.
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What is 25.4?
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Convert 5/25 to a decimal and percent
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What is 0.2 and 20?
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Convert 0.6 to a decimal and fraction (in lowest
terms)
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What is 0.006 and 3/500?
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Convert to a decimal and percent
5 3
5 8
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What is 5.375 and 537.5?
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Convert 1.852 to a fraction and percent
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What is and 185.2?

1 213
1 250
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Do the ratios below form proportion? How can you
tell?
8 2
12 4
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What is no, because 8x4 does not equal 12x2?
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Do the ratios below form proportion? Prove it.
3.8 15.2
3.1 12.4
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What is yes 3.8x12.4 3.1x15.2 (47.12)?
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Find n. Round to the nearest tenth.
n 9
9 8
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What is h 10.1?
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Find p. Round to the nearest tenth.
16 p
20 9
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What is p 7.2?
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12 bags of potatoes cost 30. How many bags can
you buy for 510?
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What is 204 bags?
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What are the characteristics of similar figures
and what does the sign for similar figures look
like?
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Similar figures (1) have the same shape (equal
angles) and (2) their sides are in proportion.
The sign indicating similarity looks like .
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Two cities are 350 miles apart. A map uses a
scale of 2.5cm20miles. How far apart are the
cities on the map?
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What is 43.75cm?
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A model of a T-Rex uses a scale of 4.5in7ft.
The arms of the model are 1.9in long. How long
were the T-Rexs arms in real life (round to the
nearest foot)?
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What is 3ft?
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Find y in these similar figures.
y
24in
90in
5in
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What is y 18.75in?
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Find g and h in these similar figures.
10.5m
3m
h
14m
g
7m
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What is h 4m and g 2m?
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Explain the difference between probability and
odds.
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Probability is the amount of successful outcomes
over total possible outcomes. Odds are the
amount of successful outcomes over unsuccessful
outcomes.
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Find the probability of rolling a number less
than 3 on an eight sided die numbered 1-8.
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What is 1/4?
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Find the odds in favor of choosing a green MM
out of a bag containing 6 orange, 3 yellow, 5
green and 2 blue MMs.
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What is 511?
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• Use all 26 letters of the alphabet to answer the
  following
• P(a vowel or a consonant)
• P(?)
• P(a letter in the word street)

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• What is
• P(a vowel or a consonant) certain, 1
• P(?) impossible, 0
• c. P(a letter in the word street)
  2/13

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You create a game where two players roll a number
cube. Player A gets 2 points if it lands on 1 or
2. Player B gets 2 points if it lands on 3 or 4
and both players get 0 points if it lands on 5 or
6. Is this a fair game?
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What is yes because both players have the same
probability of scoring 2 points 1/3 and scoring
no points 1/3?
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What is the difference between a ratio and a rate?
 
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A ratio compares two numbers and a rate is a type
of ratio that compares two quantities using
different units.
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Describe the ratios formed by the figure below in
4 different ways?


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What is 3 shaded 8 total 8 total 3 shaded 5
unshaded 8 total 8 total 5 unshaded 5
unshaded 3 shaded 3shaded 5 unshaded
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What are three ways of writing a ratio? (You can
use any numbers to make your ratios)
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What is 2 5 2 to 5 and
2 ?
5 ?
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Write as a ratio in simplest form 70 homes out
of 125 have a computer with internet access.
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What is 14 to 25?
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A recent poll PA residents found the following
results

Candidate in favor
Clinton 104
Obama 72
Undecided 24

• Write the following ratios in simplest form
• number in favor of Clinton to Obama
• number of undecided to total

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• What is
• 13 to 9
• 3 to 25