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Math FDP L5
HW TIME
Handout
Page 112-113
Questions 2-4
Page 115-116
Questions 1-8
Percent means per hundred.
97% is 97/100 = 0.97
32% is 32/100 = 0.32
We see uses of percents everywhere.
Express each percent as a fraction and decimal
A) 39%
B) 46%
C) 5%
D) 100%
E) 231%
100%
Number lines can be used to show the relationship between percents, fractions and decimals.
14% = 14/100 = 0.14
Where have you seen percents used in our everyday lives?
100/100
14/100
0
1.0
0.14
How to calculate percentages.
100%
0
14%
Converting Fractions to Percents
Solving Percent Problems
When shopping, it is often useful to be able to calculate a percent to find the total price after tax or how much you are saving from a sale.
Because percent means "per 100", you can try to convert the fraction to ?/100 form.
Follow these steps:
Step 1: Find a number you can multiply the bottom of the fraction by to get 100.
Step 2: Multiply both top and bottom of the fraction by that number.
Step 3. Then write down just the top number with the "%" sign.
Write each percent as a fraction and as a decimal:
A) 75%
B) 9%
Write each fraction as a percent and as a decimal:
C) 2/5
D) 7/20
E) 40/25
How do you convert a fraction to a
percent if the denominator is not a
factor of 100?
ex. 5/8
2/6
A pair of shoes cost $140
There is a 12% tax.
What is the total cost?