# Introduction to Percentage

*What is meant by percentage or percent?*

*What is meant by percentage or percent?*

*Examples:*

We use percentage all the time in our day-to-day life.

- At the supermarket: 2% milk
- In the mall: 70% off the price
- A saying: Give it your 100%

The word "percent" is made up of 2 words - per and cent.

Let's first see what "cent" is.

$1 = 100 ¢ 1¢ = 1

100^{th}of a $

So, percent = 1

100^{th}= 1 part out of 100 parts Similarly, 5 percent = 5 parts out of 100 parts

*Note:*We use % to denote percent.

So, | |||

1 percent | = | 1% | |

5 percent | = | 5% |

*The basket of 100 balls*

*The basket of 100 balls*

The above basket contains 100 balls of different colours.

There is 1 black ball.

What percentage of balls in the basket is black?

So, 1% of balls in the basket is black.

Black ball = 1 out of 100 = 1%

There are 10 blue balls.

What is the percentage of blue balls in the basket?

So, the basket contains 10% blue balls.

Blue balls = 10 out of 100 = 10%

21% of balls in the basket are yellow.

How many yellow balls are there?

So, there are 21 yellow balls.

Yellow balls = 21% = 21 out of 100

The basket contains 100 objects all of which are balls.

What percent of the objects in the basket are balls?

So, 100% of the objects in the basket are balls.

Balls = 100 out of 100 objects = 100%