edi ns 1 2 interpret percents as part of a hundred

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

CD

Definition“Cent” is a Latin root word which

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

•century•centimeter•centipede •cent

CD

One hundred

100CD

CD

100 pennies = $1.00

CD

Money and Percents• $ .50 is ½ of a dollar• 50% means ½

50¢50¢ =$1.00

+CD

Understanding Relationships

50% .50 50100

12= = =

Decimal FractionFractionSimplifiedPercent

CD

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

95 %CD

20 out of 100 = 20%

or

CD

10

10

40 out of 100 = 40%

Or

CD

10

10

50 out of 100 = 50%

or

CD

10

10

10 out of 100 units are shaded blue.

CD

= 10 %10

100

30 out of 100 units are shaded blue.

CD

= 30 %30

100

80 out of 100 units are shaded blue.

CD

= 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

IMP

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?

GP

what is 55 % of 100?

55GP

what is 75 % of 100?

GP

what is 75 % of 100?

75GP

what is 45 % of 100?

GP

what is 45 % of 100?

45GP

what is 100 % of 100?

100100 = 1 x 100

GP

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%

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%