U2B.L1.2-Percents Introduction

U2B.L1.2-Percents Introduction

Percents

• A percent is a ratio/fraction whose denominator(bottom) term is 100

• Percent means parts per hundred

• Comes from per centum- meaning a hundred

• What other words have Cent in them?

• To find percents, we break up a item into 100 parts

Open Ended

Write a percent that matches the picture.

Changing a percent to a ratio/fraction

• take the percent and put it over 100

• ex. 96% becomes 96/100

Open Ended

Write a percent that matches the picture.

Changing Percents into Decimals

• Percents are breaking something into 100 parts.

• What decimal place also represent one divided into 100 parts?

Changing Percents into Decimals

• Percents are breaking something into 100 parts.

• What decimal place also represents one divided into 100 parts?

• What decimal place does the picture represent? What percent?

Changing Percents into Decimals

• To write a percent as a decimal, follow these steps:

  Remove the percent symbol. Move the decimal point two places to the left, adding in zeros as needed.

Percents over 100

Is it possible to have a percent over one hundred?

What would that mean?

Write the following picture as a fraction

Now turn it into a percent

What do you get?