# Percents - How to Use Models to Find the Percent

## Percent - Models - How it Works - Video

### Example 1

Example 1:

We have 100 squares or 10 x 10 grid. So each column or row contains 10 squares.

In the picture above there are 6 columns completely shaded and 5 shaded in the next column, which means that there are 65 squares shaded in total. How do we get 65?

6*10 + 5 ==> 60 + 5 ==> 65 squares. We have 65 parts out of 100 parts shaded. Percent means number of parts out of 100 so we can drop the words *out of 100 *so we write it as 65%.

### Example 2

Example 2:

We have 100 squares or 10 x 10 grid. So each column or row contains 10 squares.

In the picture above there are 4 columns completely shaded and 3 shaded in one of the columns, which means that there are 42 squares shaded in total. How do we get 43?

4*10 + 3 ==> 40 + 3 ==> 43 squares. We have 43 parts out of 100 parts shaded. Percent means number of parts out of 100 so we can drop the words *out of 100 *so we write it as 43%.

### Example 3

Example 3:

We have 100 squares or 10 x 10 grid. So each column or row contains 10 squares.

In the picture above there are 2 rows completely shaded and 8 shaded in various rows, which means that there are 28 squares shaded in total. How do we get 28?

2*10 + 8 ==> 20 + 8 ==> 28 squares. We have 28 parts out of 100 parts shaded. Percent means number of parts out of 100 so we can drop the words *out of 100 *so we write it as 28%.

### Example 4

Example 4:

We have 100 squares or 10 x 10 grid. So each column or row contains 10 squares.

In the picture above there are 1 row completely shaded and another one, where if we combined the two rows, is a completed shaded. So we have 2 complete rows and 16 shaded in various rows, which means that there are 36 squares shaded in total. How do we get 36?

2*10 + 16 ==> 20 + 16 ==> 36 squares. We have 36 parts out of 100 parts shaded. Percent means number of parts out of 100 so we can drop the words *out of 100 *so we write it as 36%.

### Example 5

Example 5:

We have 100 squares or 10 x 10 grid. So each column or row contains 10 squares.

In the picture above we don't have any rows or columns completely shaded. We do have 4 shaded squares out of 100. How to write that as a percentage.

It is not 40% because that would be 4 complete rows or columns. So 40 shaded squares out of 100.

It is 4% because we start counting at 1% or 1 square shaded, 2% or 2 squares shaded, 3% or 3 squares shaded, and finally 4 % or 4 squares shaded.

## Live Worksheet

Here is the link if you prefer.