## Saturday, January 15, 2011

### Raelynn's Final Percent Post

Representing percents - Means out of 100. It is another name for hundredths.
eg. 65%= 65 out of 100, 65/100 or 0.65.

Fractional Percent - A percent that includes a portion of a percent.
eg. 7 3/8 or 4.5%.

Fractions, Decimals And percents - A percent that includes a portion of a percent.
eg. 7 3/8 or 4.5%.
Fractions, decimals and percents can be used to represent numbers in many different situations. Percents can be written as fractions and decimals.
eg. 1/2 = 0.5%. 150% = 150/100, 1.5 or 1 1/2.
You can use mental math strategies like halving, doubling and dividing to find the % of some numbers. 12 1/2% of 50= 1.125 x 50= 6.25.
Percents can also be combined by adding to solve problems. 5%+7%=12%

Percent of a Number - You can use mental math strategies such as halving, doubling, and dividing by ten to find the percent of some numbers. To calculate the percent of a number, write the percent as a decimal then multiply by the number 12 1/2= 12.5% = 0.125
12 1/2% of 50 = 0.125x5o= 6.25

Combining Percents
* percents can be combined by adding to solve problems 5%+7%=12%
* to calculate the increase in a number
* you can add the combined percent amount to the original percent
* you can multiply the original number by a single percent greater than 100
* percents of percents can be used to determine amounts that result from consecutive increases or decreases.

Here's my video: