Today we will interpret percent as a part of a hundred.

interpret – figure out; understand

percent – per one hundred (100) Concept

When you take a test your score is shown as a percent.

For example, lets say you take a math test that has 100 questions on it. If you score 70 correct, your percentage would be 70 %.

APK

Percent means per hundred. It is another way of saying, “out of one hundred.”

Percent

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Definition“Cent” is a Latin root word which

means 100. Many words have come from the root cent such as:

•century•centimeter•centipede •cent

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One hundred

100CD

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100 pennies = $1.00

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More examples• $ .50 is ½ of a dollar• 50% means ½

50¢50¢ =$1.00

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Money & Percents

50% .50 50100

12= = =

Decimal FractionFractionSimplifiedPercent

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100 books! I have read 95 books out of my 100-book- collection.

95 %CD

20 out of 100 = 20%

or

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10

10

40 out of 100 = 40%

Or

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10

10

50 out of 100 = 50%

or

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10

10

10 out of 100 units are shaded blue.

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= 10 %10

100

30 out of 100 units are shaded blue.

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= 30 %30

100

80 out of 100 units are shaded blue.

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= 90 %90

100

Why is understanding percent important?• You will know the relationship between any number and 100 as a percent.

• You will know how a percent translates into fractions.

• What are other reasons why it is important to know how to understand

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What is the

Percentage?

If 24 out of 100 units are shaded blue.

GP

= __ %_24_100

What is the

Percentage?

If 32 out of 100 units are shaded blue.

GP

= __ %_32_100

What is the

Percentage?

If 16 out of 100 units are shaded blue.

GP

= __ %_16_100

what is 55 % of 100?

55GP

what is 75 % of 100?

75GP

what is 45 % of 100?

45GP

what is 100 % of 100?

100100100 = 1 x 100

GP

How we are going to interpret percent as a part of a hundred.

1. Look at the diagram representing 100

2. Count the shaded boxes inside the 100’s chart

3. Write the answer in fraction form and percentage

There are 10 boxes shaded!

= 10%=

How we are going to interpret percent as a part of a hundred.

1. Look at the diagram representing 100

2. Count the shaded boxes inside the 100’s chart

3. Write the answer in fraction form and percentage

There are 31 boxes shaded!

= 31%

How we are going to interpret percent as a part of a hundred.

1. Look at the diagram representing 100

2. Count the shaded boxes inside the 100’s chart

3. Write the answer in fraction form and percentage

There are 51 boxes shaded!

= 51%

How we are going to interpret percent as a part of a hundred.

1. Look at the diagram representing 100

2. Count the shaded boxes inside the 100’s chart

3. Write the answer in fraction form and percentage

There are 50 boxes shaded!

= 50%=

How we are going to interpret percent as a part of a hundred.

1. Look at the percentage

2. Think about what that would represent on the 100’s chart

3. Write the answer in fraction form.

4. Could you reduce the fraction any further?

35%

=

How we are going to interpret percent as a part of a hundred.

1. Look at the percentage

2. Think about what that would represent on the 100’s chart

3. Write the answer in fraction form.

4. Could you reduce the fraction any further?

45%

=

How we are going to interpret percent as a part of a hundred.

1. Look at the percentage

2. Think about what that would represent on the 100’s chart

3. Write the answer in fraction form.

4. Could you reduce the fraction any further?

75%

=

How we are going to interpret percent as a part of a hundred.

1. Look at the diagram representing 100

2. Count the shaded boxes inside the 100’s chart

3. Write the answer in fraction form and percentage

There are 10 boxes shaded!

= 10%

How we are going to interpret percent as a part of a hundred.

1. Look at the diagram representing 100

2. Count the shaded boxes inside the 100’s chart

3. Write the answer in fraction form and percentage

There are 10 boxes shaded!

= 10%

Let’s review what we learned about how to interpret percent as a part of a

hundred• What does percent mean?

• How do you writeas a percentage?

• How do you write 80% as a fraction?

“out of a hundred”

10%