Bridges to Algebra and Geometry -
4th Edition

Chapter 7: Percent

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Some links are repeated for use with more than one lesson.

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7.1 Fractions, Decimals, and Percents

http://www.mathsisfun.com/decimal-fraction-percentage.html
NEW This page provides basic definitions for fractions, decimals, and percents, along with practice problems for converting between them.

http://www.sosmath.com/algebra/fraction/frac7/frac7.html
This site explains how to convert from percents to fractions or decimals and gives examples.

http://pbskids.org/cyberchase/math-games/mission-magnetite/
NEW This site has a simple game for matching fractions, decimals, and pictures that represent the same percent.

http://www.math-play.com/Fractions-Decimals-Percents-Jeopardy/fractions-decimals-percents-jeopardy.html
NEW This site delivers a Jeopardy-like game for practicing with fractions, decimals, and percents.

7.2 Finding Percents and Solving Equations

http://www.math.com/school/subject1/lessons/S1U1L7GL.html
NEW This site has four pages that define and practice working with percents.

http://www.purplemath.com/modules/percntof.htm
NEW This site demonstrates how to approach the many types of “percentage” word problems.

7.3 Estimating Percents

http://www.sosmath.com/algebra/fraction/frac7/frac7.html
This site explains how to convert from percents to fractions or decimals and gives examples.

http://www.mathvillage.info/node/98
NEW This page includes a video tutorial and example problems that help you learn how to estimate what percentage of a shape is shaded.

http://www.shmoop.com/ratios-percentages/estimating.html
NEW This page gives some quick helpful tips for estimating common percent values like 10%, 25%, and so forth.

7.4 Percent Change

http://www.mathsisfun.com/percentage-difference.html
NEW This page shows how to calculate percent difference or percent change, including some practice problems.

http://web.mnstate.edu/peil/MDEV102/U4/S32/S323.html
NEW This page gives some tips and examples for setting up typical percentage problems.

7.5 Simple and Compound Interest

http://www.mathsisfun.com/money/interest.html
NEW This page introduces the concept of interest, both simple and compound, with some practice problems.

http://www.moneychimp.com/features/simple_interest_calculator.htm
NEW This site includes a simple versus compound interest calculator, clearly showing the benefits of compounding.