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. Fraction: The division of two numbers written in the form . 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 0.9 90 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 =

Fractions, Decimals, Percent 1/5 0.2 Renaming fractions as percents. Rename 1/5 as a percent. Write the fraction as a decimal by dividing the numerator by the denominator. Write the decimal as a percent. Examples: 3/4 = = 15 = 0.2 . = 20% 2 1/5 = 2/3 =

Fractions, Decimals, Percent 3% 0.03 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. Examples: 43% = . % 5.7% = 287% =

Fractions, Decimals, Percent Sentence problems. What is 40% of 19. Write the problem as an What is 40% of 19 equation. ↓ ↓ ↓ 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 No. Responding A 23 B 72 C 45 D 60 10 20 30 40 50 60 70 80 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

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 Total Revenue 2000 $ 3.3 million 2001 $ 4.1 million 2002 $ 3.9 million 2003 $ 4.5 million 2004 $ 4.9 million $0.0 $1.0 $2.0 $3.0 $4.0 $5.0 $6.0 2000 2001 2002 2003 2004