## Tuesday, February 1, 2011

### Ryans Final Percent Post

Percent
Means out of 100
Another name for hundredths
65 % means 65 65 out of hundred or 65/100

Chapter 4.1 Representing Percents
You can represent a percent by using grids.
ex. If you have a 155% and you need to present it using grids, you have to have 2 100 grids to show it. One grid has 100 boxes which means a 100%, so you have to shade 1 whole grid and in the second grid, shade 55 boxes.

Chapter 4.2 Fractions, Decimals, and Percents
You can convert or represent decimal, fraction and percent.
ex. 36% = 0.36 = 36/100 or 4/25

Chapter 4.3 Percent of a Number
You can find the percent of a number by writing the percent to decimal then multiply it to the number.
ex. 160% of \$53.27 = 1.60 x 53.27 = \$ 85.23

Chapter 4.4 Combining Percents
You can combine percent to another percent to solve problems. (5% + 7% = 12%)
ex. A girl bought a shoes that costs \$150. Adding to this cost are the P.S.T. which is 7% and G.S.T. 5%. You may add the P.S.T and the G.S.T which is 12 % and the whole cost is 112%. Divide the 112% to hundred, 1.12, then multiply it to the cost of the shoe, \$150 x 1.12 is equal to \$168. This is the amount that you need to pay.

My percent video