6th Grade Math Textbook, Fundamentals

(Marvins-Underground-K-12) #1
 &KDSWHU

7-2


Rename 12 % as a fraction.

12 % 



So 12 % .

125  125
1000  125

125
1000

125
1000

1
8

1
2

1
8

12.5 • 10
100 • 10

12.5
100

1
2

1
1 2 Rename 14.5% as a decimal.


14.5% 0.145
So 14.5% 0.145

2

To rename a percent as a fraction:


  • Write the percent as a fraction
    with a denominator of 100.


45% 


  • Divide both terms by their GCF.




To rename a percent as a decimal:


  • Remove the percent symbol.
    To divide by 100, move the decimal
    point twoplaces to the left.


45% 0.450.45

9
20

45  5
100  5

45
100

45
100

Write 0.5638 as a percent. Round
to the nearest tenth of a percent.

0.5638 0.5638% Multiply by 100.

56.4% Round.

Think

56.38%

56.38
100

5638
10,000

You can rename a decimal as a percent.


  • Move the decimal point twoplaces to the right
    to multiply by 100, and write the % sign.
    or

  • Write the decimal as a fraction that has a denominator
    of 100. Then write the numerator with a % sign.


So 209 and 0.45 represent the percent of Nina’s collection that are Kennedy half dollars.

Fractions, Decimals, Percents


Objective To write percents as fractions and decimals• To write fractions and decimals
as percents• To compare fractions, decimals, and percents

In Nina’s collection of half dollars, 25% are Walking Liberty, 30% are
Benjamin Franklin, and the rest are Kennedy half dollars. What fraction
and what decimal represent the percent that are Kennedy half dollars?

To answer the question, first add the given percents (the parts), and

then subtract their sum from 100% (the whole).

25% 30% 55% and 100% 55% 45%
So rename 45% as a fraction and as a decimal.

You can rename a percent as a fraction or as a decimal.

Rename 0.2 as a percent.

0.2 0.2020%
or

0.2  102 10 • 102 • 10   10020 20%

Write zeros
as needed.
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