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Perimeter and Area
Graphs and Tables
Computation and Estimation
Geometry
Potpourri
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The isosceles triangle pictured to the left has a
total perimeter of 20 centimeters. This is the
distance of the bottom segment, which is marked x.
8 cm.
8 cm.
x
4
What is 4 centimeters?
5

• Of the following expressions, this is the one
  that could be used to find the area of the figure
  to the left.
• 4 4 4 4
• 5 5 4 4
• 5 x 4
• 5 x 5 x 4 x 4

1 square unit
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What is C. 5 x 4?
7

• Ted was very excited because his mom said he
  could put a Cleveland Browns border around his
  room. In order to buy the correct amount, this
  is what he needs to know about his room.
• The area of his walls added together.
• The height of the ceiling.
• The volume of the room.
• The perimeter of his room

8
What is D. The perimeter of his room?
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A parallelogram is shown on the grid below

• This expression represents the area of the
  parallelogram
• 6 6 4 4
• 8 8 4 4
• 6 x 4
• 8 x 4

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What is D. 8 x 4?
11
The right isosceles triangle pictured to the left
has dimensions as shown. This is the area of the
triangle.
10 cm.
10 cm.
12
What is 50 square centimeters?
Explanation To find the area of a triangle, you
need to multiply the base (10 cm. ) by the height
(10 cm.) and then divide by 2.
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Type of Ice Cream Number of Votes
Vanilla
Chocolate
Strawberry
Mint

• Chelsea asked the students in her room which type
  of ice cream they liked. The above graphic shows
  the results.
• Of the following, this is what Chelsea used to
  show her data.
• Bar Graph
• Frequency Table
• Line Graph
• Histogram

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What is B. Frequency Table?
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Season Number of Votes
Fall 10
Winter 12
Spring 18
Summer 60
Bob surveyed 100 classmates to find out their
favorite season of the year. The data is in the
table at the top of this slide. He then created
a circle graph using the same data, but forgot to
label the different areas. According to the
information given, this is season represented by
the blue part of the pie chart.
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What is Spring?
17
Number of Leighton Students Who Bought Ice Cream
at Lunch on Monday
According to the bar graph, this is the mean
number of girls in each grade level that bought
ice cream on Monday.
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What is 30 girls?
Explanation The mean is another word for
average. According to the graph, 30 3rd grade
girls, 35 4th grade girls, and 25 5th grade girls
bought ice cream on Monday. To find the average,
you need to find the sum of the three numbers,
which is 90, and then divide by 3, since there
are three numbers.
19
Mrs. Lambacher collected data from the school in
the canned food drive. She wanted to find out
which grade brought in the most canned food and
what the percentages were. After looking at the
data, she made the circle graph below. However,
she forgot to fill in the percentage for the 5th
graders. This is the percent she should have
filled in.
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What is 55?
21
The graph below shows annual sales at Bernies
Bakery during its first four years of business.

• Of the choices below, this is the best prediction
  for the annual sales in 2004.
• 80,000
• 90,000
• 100,000
• 120,000

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What is C. 100,000?
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Every day on his way to work, Bill stops at the
doughnut shop and gets two doughnuts and one
large cup of coffee. One doughnut costs 0.99
and a cup of large coffee costs 2.09. This is
about how much money Bill spends after 30 trips
to the coffee shop.
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What is 120?
Explanation Bill spends about 4 each day at
the doughnut shop. 4 x 30 120
25
Maddie measured the length and width of the
rectangle above. She said the length of the
rectangle was 2 1/8 inches long. The width of
the rectangle was 1 1/4 inches long. This is
the total perimeter of the rectangle.
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What is 6 ¾ inches?
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Four different fifth grade girls decided to sell
candy bars to raise money for the homeless.
Their goal was to sell a total of 1000 candy
bars. Mary sold 237 candy bars, Liz sold 293
candy bars, and Jackie sold 268 candy bars. How
many bars does the fourth girl, Lucy, have to
sell in order to reach their group goal?
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What is 202 candy bars?
29
There are 6,965 library books spread out over 70
different shelves in a library. If each shelf
has about the same number of books, this is a
reasonable estimate for how many books are on
each shelf.
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What is 100 books?
31
The Smith family went on a family vacation. It
took them 4 days to get to their destination by
car, which was 1,003 miles away. This is the
about the average number of miles they had to
drive each day to arrive at their destination.
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What is 250 miles?
33
Sam drew a triangle and measured each of the
angles. He said one angle measured 90 degrees,
one angle measured 40 degrees and the third angle
measured 60 degrees. His friend, Tony, said
those measurements werent possible. This is the
reason Tony said that.
34
What is Those 3 angles total 190 degrees, but the
sum of all the angles in any triangle has to be
exactly 180 degrees?
35
This is the sum of all the angle measurements in
the figure shown below.
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What is 360 degrees? Explanation The sum of all
the angles in any quadrilateral is always 360
degrees.
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Joan has two gardens in her yard. One garden is
in the shape of a circle and has a diameter of 5
feet. The other garden is in the shape of a
square and the length of one side of the square
is 5 feet. Joan wants to put fencing around both
gardens. This is about how much fencing Joan
will need.
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What is Joan needs about 35 feet?
Explanation To find the amount of fencing Joan
needs for the circle, you need to know its
circumference. To find about what the
circumference is, you need to multiply the
diameter by 3, so the circumference is about 15
feet. To find the amount of fencing for the
square, you need to find its perimeter. Since
one side of the square is 5 feet, its perimeter
is 20 feet . 15 feet 20 feet 35 feet
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Of the four shapes pictured below, these are the
two that appear to be congruent to each
other. A. B. C. D.
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What is Shapes A and B? Explanation Congruent
means two shapes that have the same size and
shape. Even though shape B has been rotated
slightly, it is still the same size and shape as
shape A.
41
The two lines pictured above cross at a 90
degree, or right angle. This is the word that
means crossing at a 90 degree angle.
42
What is perpendicular?
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This is the median number of the
following 0.34 1/3 3/8 0.3 2/5
44
What is the 0.34?
Explanation The median is the middle number in
a set of data after the numbers have been put in
order. The numbers in order are 0.3 1/3
0.34 3/8 2/5 so the middle number is
0.34
45
Ten balls are placed in a bucket. The balls are
numbered 1 10. Jill takes one ball out of the
bucket. This is the probability, expressed as a
percent, that the ball she takes out has a number
on it that is a factor of 10.
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What is 40
Explanation The factors of 10 are 1, 2, 5, and
10. Since 4 of the balls are factors of 10 and
there are 10 balls, she has a 40 chance.
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Bill is at a party and needs to make a sandwich.
There are two different kinds of bread that he
can choose from wheat or rye. There are three
different types of meat he can choose from
bologna, ham, or turkey. There are three
different types of cheese he can choose from
Swiss, American, or cheddar. Bill can only make
one choice from each category. This is the
number of different types of sandwiches Bill
could actually make.
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What is 18 different types of sandwiches?
Explanation There are 2 different types of
bread, 3 different types of meat, and 3 different
types of cheese. To find the total number of
combinations, you multiply those three numbers
together. (2 x 3 x 3 18)
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This is the answer to the problem below
20 23 x 2 3
50
What is 7?
51
A spinner is divided into 5 equal sections. The
sections are numbered 1, 2, 3, 4, and 5. Sally
spins the spinner 100 times. According to
theoretical probability, this is how many times
out of the 100 spins, Sally should get a prime
number.
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What is 60 spins?
Explanation A prime number is a number that has
exactly 2 factors. 2, 3, and 5 are all prime
numbers. According to theoretical probability,
Sally should get each number 20 times. Since
there are three prime numbers, she should spin a
prime number a total of 60 times.