A1FractionsDecimalsPercents.notebook
September 01, 2015
Percents, Fractions, and Decimals
Algebra 1
Ch.1 Notes Page 8
P8 Percents, Fractions, and Decimals
Percent means out of 100.
Example: 63% means something happens 63 times out of 100.
Percents are changed to Decimals by moving the decimal point.
Move the decimal point 2 places to the left to change from
Percents to Decimals.
Decimals are changed to Percents by moving the decimal point.
Move the decimal point 2 places to the right to change from
Decimals to Percents.
Aug 20­6:28 AM
Writing Fractions as Percents
Aug 20­6:41 AM
Multiplying Decimals
Method #1
Divide the Fraction to get a Decimal.
Move the decimal 2 places to the right.
Method #2
Multiply the Bottom by a number that will give you 100.
Multiply the Top by the same number.
The new top number will be the Percent
Aug 20­10:22 AM
Aug 22­6:31 AM
Find the Percent of a Number
What is 20% of 50?
First ­ Change the Percent to a Decimal .2
Second ­ Multiply the number 50 by the decimal .2
Aug 20­11:07 AM
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