## Tuesday, February 1, 2011

### Kayla's Final Percent Post

• Understanding Percents
Percent:
• means out of a hundred.
• another word for hundreths.
• 65% means 65 out of 100 0r 65/100 or 6.5
Fractional Percent:
• a percent that includes a portion of a percent such as:
• 1/2, 0.42%, 7 3/8%, 125, 3/4%, 4.5%
4.1: Representing Percents
• fractions, decimals, and percents can be used to represent numbers in various situations.
• percents can be written as fractions and as decimals.
• eg. 1/2% = 0.5%,
• 150% = 150/100
4.2: Fractions, Decimals and Percents
• you can convert and/or represent fractions, decimals and percents.
4.3: Percent of a Number
• you can use mental math strategies such as halving, doubling and dividing to find the percent of some questions.
• To calculate the percent of a number, write the percent as a decimal then multiply by that number.
4.4: Combining Percents
• percents can be combined by adding to solve problems.
• eg. 5% + 7% = 12%
• To calculate the increase in a number, you can add the combined percent amount to the original number.
• eg. 12% of 100 = 0.12 x 100 = 12
• percents of percents can be used to determine amounts that result from consecutive percent increase or decreases.