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Example#1:

30% = 30/100

30 and 100 can both be divided by 10.

30 divided by 10 = 3

100 divided by 10 = 10

30% = 30/100 = 3/10

Example #2:

9 % = 9/100.

9 and 100 can both only be divided by 1, therefore it is in simplest form.

Convert the fraction to a decimal, then convert the decimal to a percent.

Example #1:

4/5 = 4 divided by 5

(notice a decimal point and a zero placeholder were added).

4/5 = 0.8

0.8 = 80%

Example #2:

3/8 = 3 divided by 8

(need to show the division process)

3/8 = 0.375

0.375 = 37.5%

This method works only is the denominator of the original fraction is a factor of 10, 100, 1000, etc.

Example #1:

4/5 = x/10

4/5 = 8/10 (multiplied the numerator and denominator by 2)

8/10 = 80/100 = 80%

Example #2:

7/20 = x/100

7/20 = 35/100 (multiplied the numerator and denominator by 5)

35/100 = 35%

PERCENTS USING MODELS

The circle is divided into 4 equal-sized pieces.

Each piece is ¼ of the whole.

¼ of 100% = 100 divided by 4 = 25%.

Each piece represents 25%.

The rectangle is divided into 5 equal-sized pieces.

Each piece represents 1/5 of the whole.

1/5 of 100% = 100 divided by 5 = 20%

Each piece represents 20% or 1/5 of the whole.

The red section is 20% or 1/5.

The green section is 20% or 1/5.

The red and green sections make up 40% or 2/5 of the whole.

Per

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