## Thursday, January 13, 2011

### Final Percent Post

A percent is a fraction out of one hundred. It can be represented by a hundred grid and written as a fractions or decimals. Percents can be used to find taxes or discounts of money.

This chapter was about percents and how to use them in real life to solve many of the problems in real life.

You can represent percents using a hundred grid. - 4.1

1 grid = 100%.
This grid represents half which is 50%.

Percents can be written in 2 different ways. - 4.2
1st way is decimals.
2nd way is a fractions.
50%= 1/2, 0.5

To calculate the percent of a number, you have to write the percent as a decimal and then multiply it by the number - 4.3
50% = 100% 0.5 x 100
50% of 100 = 50.

To calculate the increase in a number - 4.4

You can combined the percent amount to its original number-

12% of 100 = 0.12 x 100 = 12

100+12=112

• You can multiply the original number by one percent greater than 100-
112% of 100 = 1.12 x100

112% of 100 = 112.

Now here is my percent video.