Transcript Unit 2 Marketing Math Unit 2 Vocabulary • • • • • • Bar Graph Circle Graph Decimal Number Denominator Digits Fractions • • • • • Line Graph Mixed Number Numerator Percent Pie Chart Unit 2 Essential Question • How do you perform basic mathematical computations using fractions, percents,

Unit 2
Marketing Math
Unit 2
Vocabulary
•
•
•
•
•
•
Bar Graph
Circle Graph
Decimal Number
Denominator
Digits
Fractions
•
•
•
•
•
Line Graph
Mixed Number
Numerator
Percent
Pie Chart
Unit 2 Essential
Question
• How do you perform basic
mathematical computations using
fractions, percents, and decimals
and display the data in a usable
visual format?
Essential Question 1
Marketing Math
• How do you convert decimals to
fractions and percent, fractions to
decimals and percent, and percent
to decimals and fractions?
Fractions, Decimals, Percent
• Digit: The ten basic symbols of our numbering system:
0,1,2,3,4,5,6,7,8,9.
• Decimal Number: A base-ten numeral that uses a decimal
point and place value.
• Percent: A part of a whole. A ratio that compares a number to
100.
a
• Fraction: The division of two numbers written in the form b .
– Numerator: The top number in a fraction; represents the number of
parts being considered.
– Denominator: The bottom number in a fraction; represents the number
of parts in a whole – cannot be equal to zero.
• Mixed Number: A whole number and fraction together.
Fractions, Decimals, Percent
• Renaming decimals as percents.
– Rename 0.9 as a percent.
• Multiply by 100 by moving the decimal
point 2 places to the right.
• Write in additional zeros if necessary.
• Write the percent sign.
• Examples:
0.89 =
0.034 =
8.4 =
0.90.
90 %
Fractions, Decimals, Percent
• Renaming fractions as percents.
– Rename 1/5 as a percent.
1/5 = 15
• Write the fraction as a decimal by
dividing the numerator by the
denominator.
• Write the decimal as a percent.
= 0.2
0.20 .
• Examples:
3/4 =
= 20%
2 1/5 =
2/3 =
Fractions, Decimals, Percent
• Renaming percents as decimals.
– Rename 3% as a decimal.
• Divide by 100 by moving the decimal
point 2 places to the left.
• Write in additional zeros if necessary.
• Remove the percent sign.
.0 3%
0.03 %
• Examples:
43% =
5.7% =
287% =
Fractions, Decimals, Percent
• Sentence problems.
– What is 40% of 19.
• Write the problem as an
equation.
What is 40% of 19
↓ ↓
↓
x = 40% x 19
• Rename the percent as a decimal. x = 0.4 x 19
• Solve.
x = 7.6
Fractions, Decimals, Percent
• Sentence problems.
– Examples:
• Find 25% of 80.
• 13 is what percent of 26?
• 45 is 10% of what number?
Essential Question 2
Marketing Math
• How are bar graphs, line graphs,
and circle graphs constructed and
read?
Bar, Circle, and Line Graphs
• Bar Graph: A drawing made up of parallel bars
whose length are proportional to the qualities
being measured.
• Circle Graph: A geometric representation of the
relative sizes of the parts of the whole. Also
known as a pie chart.
• Line Graph: Graph that uses a line to join parts
representing changes in a variable quantity over a
specific period of time.
Bar Graphs
• Best used to show the relationship between two
variables.
• Example:
– Construct a bar graph to represent the data collected
from a survey.
Selection
A
B
C
D
No. Responding
23
72
45
60
80
70
60
50
40
30
20
10
0
A
B
C
D
Circle Graphs
• Best used to show the relationship of a single
variable; usually in terms of a percentage.
• Must convert data to degrees of arc. There are 360°
of arc in a circle.
• Example:
– Construct a circle graph to represent the types of
computers sold in one year.
Computer Sales
Educational
$ 2,000,000
Personal
$ 5,200,000
Business
$10,400,000
Scientific
$ 2,400,000
Scientific
12%
Educational
10%
Personal
26%
Business
52%
Line Graphs
•
•
Best used to show the relationship of a single
variable and a constant.
Example:
– Construct a graph which best represents the provided
data. (5 pts)
Year
2000
2001
2002
2003
2004
Total Revenue
$ 3.3 million
$ 4.1 million
$ 3.9 million
$ 4.5 million
$ 4.9 million
$6.0
$5.0
$4.0
$3.0
$2.0
$1.0
$0.0
2000
2001
2002
2003
2004