# Fractions, Decimals and Percents - PowerPoint PPT Presentation

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## Fractions, Decimals and Percents

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### Fractions, Decimals and Percents What is a percent??? Percent : A ratio of a number to 100. The symbol % is used to indicate that a number is a percent . – PowerPoint PPT presentation

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Title: Fractions, Decimals and Percents

1
Fractions, Decimals and Percents
2
What is a percent???
• Percent A ratio of a number to 100. The symbol
is used to indicate that a number is a percent
.
• Example 40 is the ratio 40 to 100, or 40

• 100
• Percents can be written as fractions or decimals

3
Writing Percents as FractionsPearson Prentice
Hall Mathematics Video
• Write 35 as a fraction in simplest form.
• 35 35
• 100
• 7
• 20
• Write the percent as a fraction with a
denominator of 100
• Simplify

4
Writing Percents as Fractions
• Write 88 as a fraction
• 88 88
• 100
• 22
• 25
• Write the percent as a fraction with a
denominator of 100
• Simplify

5
• Write 2 as a fraction

6
• Write 45 as a fraction

7
Writing Percents as DecimalsPearson Prentice
Hall Mathematics Video
• Write 43 as a decimal.
• 43 43
• 100
• 0.43
• 43 43. 0.43
• Write the percent as a fraction with a
denominator of 100.
• Write the fraction as a decimal
• All you have to do is move the decimal to the
LEFT 2 times!

8
Writing Percents as Decimals
• Write 105 as a decimal.
• 105 105
• 100
• 1.05
• 105 105. 1.05
• Write the percent as a fraction with a
denominator of 100.
• Write the fraction as a decimal
• All you have to do is move the decimal to the
LEFT 2 times!

9
• Write 16 as a decimal

10
• Write 104 as a decimal

11
Writing Decimals as PercentsPearson Prentice
Hall Mathematics Video
• Write 0.07 as a percent.
• 0.07 7
• 100
• 7
• 0.07 0.07 7
• Write the decimal as a fraction
• Write the fraction as a percent
• All you have to do is move the decimal to the
RIGHT 2 times!

12
Writing Decimals as Percents
• Write 0.038 as a percent.
• 0.038 38
• 1000
• 3.8
• 0.038 0.038 3.8
• Write the decimal as a fraction
• Write the fraction as a percent
• All you have to do is move the decimal to the
RIGHT 2 times!

13
• Write 0.57 as a percent

14
• Write 0.2 as a percent

15
Writing Fractions as PercentsPearson Prentice
Hall Mathematics Video
• Write 4 as a percent
• 5
• 4 4 20
• 5 5 20
• 80
• 100
• 80
• Write an equivalent fraction with a denominator
of 100.
• Write the fraction as a percent

16
Writing Fractions as Percents
• Write 3 as a percent
• 8
• 3 3 8
• 8
• 0.375
• 37.5
• Use division to write the fraction
• Write the decimal as a percent

17