1. Percentage Concept 2

2. Each grid above has 100 boxes. For each grid, the ratio of the number of shaded boxes to the total number of boxes can be represented as a fraction. Comparing Shaded Boxes to Total Boxes GridFractionPercentage 196% 29% 377%

3. Definition: A percent is a ratio whose second term is 100. Percent means parts per hundred. The word comes from the Latin phrase per centum, which means per hundred. In mathematics, we use the symbol % for percent

4. We can also show percents as decimals. Here’s how: To change a percentage into a decimal, take up the % sign and divide by 100. 20%=.20 8%=.08 Challenge: What would you do to change a decimal to a percentage? Multiply by 100 and attach a % sign.

5. Let's look at some examples in which we are asked to convert between, fractions, decimals and percents.

6. Your task: Write each fraction as a percent and as a decimal. Extension:

7. Let’s try and convert them the other way: