Transcript Chapter 07 Section 7

Marketing Essentials
n Chapter 7 Basic Math Skills
Section 7.1 Math Fundamentals
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
What You'll Learn
 How to write numbers in words using commas
and hyphens
 How to understand fractional amounts
 How to perform basic math operations with
decimal numbers
 How to round numbers, especially amounts of
money
 How to convert fractions to decimal equivalents
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Why It's Important
Virtually every job in the fields of marketing
and business requires a good understanding
of math fundamentals. Many young people
need a review of basic math skills to provide a
good foundation in math. In this section, you will
have an opportunity to sharpen your math skills.
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Key Terms
 digits
 fractions
 numerator
 denominator
 mixed numbers
 decimal number
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Writing Whole Numbers
Whole numbers can be written without fractions or
decimals. To read a whole number or write it in
words, follow these five steps:
 Separate the number into groups of three digits:
units, thousands, and millions.
 Separate the groups with commas.
 Never use the word "and".
 Use hyphens in numbers less than 100 that are
written as two words.
 When a three-digit group is made up of
only zeros, do not write the name of the group.
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Fractions
Fractions are numbers used to describe a part of
some standard amount.
 The numerator is the top number. It
represents the number of parts.
 The denominator is the bottom number. It
represents how many parts are in the whole.
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Decimals
A decimal number is a fraction or mixed number
whose denominator is a multiple of 10. To read
or write a decimal number, follow these steps.
Use 15.083 as an example.
1. Begin with the whole number to the left of
the decimal point (fifteen).
2. Read or write "and" for the decimal point.
3. Read or write the number to the right of the
decimal point as a whole number (eighty-three).
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Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Decimals
4. Use the name of the decimal place of the final digit
(thousandths).
The result is fifteen and eighty-three thousandths.
You may also hear decimal numbers spoken using the
whole number and only the names of the digits in the
decimal places, with "point" for the decimal point.
For example, 15.083 might be spoken as
"fifteen point zero eight three".
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Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Adding and Subtracting Decimal Numbers
To add or subtract decimal numbers, first list the
numbers vertically, keeping the decimal points in line
with each other. Then add or subtract as you would
with whole numbers. Sometimes you may need to write
zeros to fill a column.
Align decimal points vertically.
1.45 + 3.4 = ?
1.45
+ 3.40
4.85
Write 0s as needed.
Add as with whole numbers.
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Rounding Decimal Numbers
1. Find the decimal place to which you are
rounding.
2. Look at the digit to the right of that place.
3. If the digit is less than 5, leave the first
digit as is. If the digit is 5 or greater, round up.
Chapter 7 n Basic Math Skills
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SECTION 7.1
Math Fundamentals
Dividing Decimal Numbers
1. Set up the division problem as you would with
whole numbers.
2. Shift the decimal point in the divisor so that the
divisor becomes a whole number. Shift the
decimal point in the dividend the same number
of decimal places.
3. Place the decimal point in the answer space
directly above its new position in the dividend.
4. Divide as you would with whole numbers.
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SECTION 7.1
Math Fundamentals
Converting Fractions to Decimals
To convert any fraction to a decimal, simply
divide the numerator by the denominator.
Numerator
Denominator
1
4
=
1 ÷ 4 = 4
0.25
1.00
8
20
20
0
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7.1
ASSESSMENT
Reviewing Key Terms and Concepts
1. Write the whole number 2,000,265 in
words, using commas and hyphens
correctly.
2. Explain the meaning of 3/5.
3. Multiply: $4.99 x 5
4. Round the answer from question 3 to the
nearest dollar.
5. Convert the fraction 3/4 to its decimal
equivalent.
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7.1
ASSESSMENT
Thinking Critically
Sometimes rounding decimal numbers to
whole numbers makes a complicated math
problem easy to do "in your head." Name at
least one example when rounding is helpful.
Chapter 7 n Basic Math Skills
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7.1
Graphic Organizer
Understanding Decimal Numbers
Decimal point
Decimal placement name
Chapter 7 n Basic Math Skills
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Marketing Essentials
End of Section 7.1
Chapter 7 n Basic Math Skills
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