# Problem Solving

## CONTENTS OF CURRICULUM UNIT 80.07.07

## Solving Problems “by the Hundreds” A Study of Percentage and Its Applications in the Study of Consumer Related Problems

Your feedback is important to us!

After viewing our curriculum units, please take a few minutes to help us understand how the units, which were created by public school teachers, may be useful to others.

## Percents, Common Fractions, a Decimals

7% = 7/100, 6 1/3% = 6 1/3 Ö 100 = 19/3 x 1/100 = 19/300,

82% = 82/100 = 41/50, 4.8% = 4.8/100 = 48/1000 = 6/125.

The fraction 13/100 means 13 divided by 100. Every time a number is divided by 100 the decimal point moves two places to the left. To change a percent to a decimal, divide the given number by 100, that is, move the decimal point two places to the left and remove the percent sign.

57$ = .57 | 125% = 1.25 | .39% = .0039 | 87.5% =. 875 |

1/4 = 1/4 x 100 = 25% | .25 = 25 | 100= 25% |

Percent | Decimal | Fraction | Percent | Decimal | Fraction |

45% | 92% | ||||

24 | .062 | ||||

3/8 | 15/16 | ||||

5 1/4% | 3.8% | ||||

4.4 | .70 | ||||

5/12 | 6/7 |