Math Drills
Math Drills: Percents Worksheets
Download these worksheets to sharpen your percent calculation skills. Sheets focus on the percentage of a number, percentage rate, and percentage increase/decrease.
Other
Quick Math: Percentages
This section will explain how to apply algebra to percentage problems.
The Math League
The Math League: Percent and Probability: What Is a Percent?
This site defines a percent, explains it as a fraction and decimal, and shows how to estimate a percentage.
Yale University
Yale New Haven Teachers Institute: Solving Problems "By the Hundreds"
The Yale-New Haven Teachers Institute site contains various math exercises relating to percentage and consumer-related problems. An explanation of sales tax, a related problem and answer are given.
Illustrative Mathematics
Illustrative Mathematics: F Bf Latitude
For this task, students are presented with data about latitude and the percentage of the Earth's surface north of each latitude line. They are to use this data to sketch a graph, analyze it, and build an understanding of an invertible...
Ducksters
Ducksters: Kids Math: Ratios, Fractions, and Percentages
This page explores how ratios can be written as fractions. The site also discusses proportions and reducing ratios with problems and examples.
Cyberbee
Cyberbee: M&ms in the Bag Graphing Activity
Use a bag of M&Ms to learn about probability. Includes graphs and percentages, and the steps needed for the students to duplicate the numbers.
PBS
Pbs: The Lowdown: Percents Defined
Learn how to calculate percent as a rate per 100 in this video from KQED. In the accompanying classroom activity, students model percent with a 10 x 10 grid. After watching the video, they create a design or picture on a 10 x 10 grid,...
PBS
Pbs: The Lowdown: Indoor/outdoor Residential Water Use in California
Compare data about indoor and outdoor residential water use in northern and southern sites in this infographic from KQED and the California Single Family Water Use Efficiency Study. The accompanying classroom activity helps students find...
PBS
Pbs: The Lowdown: Rot and Rubbish: The Rancid Truth About How Much Food We Waste
Explore the math of worldwide food waste, with focus on percentage, in this infographic from KQED. In the accompanying classroom activity, students predict the percent of food in each of the various categories (e.g., grains, fruit, etc.)...
Calculator Soup
Calculator Soup: Fraction to Percent Calculator
Convert a fraction to a percent. Convert proper and improper fractions to percentages. This calculator shows the steps and work to convert a fraction to a percentage number.
Calculator Soup
Calculator Soup: Mixed Number to Percent Calculator
Convert mixed numbers or mixed fractions to percents. The mixed number to percentage calculator finds the decimal equivalent by finding the decimal value of the fraction, adding the decimal to the whole number part of the mixed number,...
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