## Wednesday, February 2, 2011

### Final Percent Post

What is a percent?
Percent
is a number out of 100. A hundred grid contains 100 squares, so for example if you colour 50 squares that is 50%.

4.1 Representing
Percents.

To represent a percent, you can use hundred grids because they are out of 100. A complete filled hundred grid represents 100%.

Here is an example of 100% in a hundreds grid.

If the percent is greater than 100 you will have to shade more than one grid. To represent a percent between 0% and 1%, shade part of one square from the hundred grid.

4.2 Fractions, Decimals, and Percents

Percents can be represented as fractions and decimals. To convert a percent to a decimal, you must divide the percent by 100. To convert a decimal into a fraction, you write the decimal as the numerator. However, the denominator depends on the place value of the decimal.

4.3 Percent of a Number.

You can use strategies like halving, doubling, and dividing by ten to finds of numbers.
When calculating the percent of a number, convert the percent to a decimal, and multiply it by the number.

4.4 Combining Percents.

Percents can be put together by adding to solve questions. To calculate the increase in a number, you can add the combined percent amount to the original number. You can multiply the original number by a single percent greater than 100.

Percent Video :

This is my final percent video.