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.
Primary Resources
Primary Resources: Percentages
A selection of teacher resources dealing with percentages. There are worksheets and PowerPoints available to download.
Primary Resources
Primary Resources: Fractions, Decimals, and Percentages
A large collection of teacher resources dealing with fractions, decimals, and percentages at many different levels. There are worksheets, PowerPoints, smartboard presentations, Word, and pdf files for the teacher's use.
Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Percent and Problem Solving
Using this tutorial, you'll learn how to convert percents into decimals (and vice versa) and to solve various problems involving percents. Offers a variety of sample problems with step-by-step solutions and practice exercises for you to...
University of Texas at Austin
Mathematics Teks Toolkit: And We Go Around
Collect and display data using a bar and circle graph to explore fractions and percents.
Elias Saab
Math Drills: Percentage Word Problems Quiz
An interactive quiz which provides students with word problems involving a percentage to be solved. Students input their solution and have the program evaluate it. Hints are available if the student needs them, and explanations are...
The Math League
The Math League: Percent & Probability
This tutorial gives definitions and examples of percents and probability and covers percent as a fraction and percent as a decimal.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Fracciones, Decimals Y Porcentajes
This interactive activity deals with the concepts of fractions, comparing fractions, all different arithmetic operations with fractions, converting a fraction to a decimal form and all different calculation with percents.
Other
Math score.com: Math Practice Problems Percent of Quantity
On this site, students can practice solving three types of percent problems and check their answers.
Saddleback College
Algebra2 Go: Prealgebra
The resource consists of comprehensive learning tools such as class notes, video lectures, and templates through which students can review prealgebra topics.
Quia
Quia: Percent Problems
A Jeopardy game tests students' knowledge of fractions, decimals, percents, integers, and combining like terms. Play with one or two players.
Texas Instruments
Texas Instruments: Tints and Shades
In this activity, students solve a problem involving mixing of paint colors. They use color charts to determine the fractional parts and percentages of colors needed to create tints and shades. [Requires Adobe Reader.]
Scholastic
Scholastic: Study Jams! Math: Fraction Equivalents
Explore fractions and the decimal and percent equivalents with this interactive lesson.
Scholastic
Scholastic: Study Jams! Math: Decimals and Percents: Percents
Watch the video then test your knowledge of percents.
Illustrative Mathematics
Illustrative Mathematics: 7.rp Comparing Years
For this lesson, 7th graders determine the proportional relationships to determine the percent decrease.
Illustrative Mathematics
Illustrative Mathematics: 7.rp Chess Club
Seventh graders use their knowledge of proportional relationships to determine the percent increase or decrease.
CK-12 Foundation
Ck 12: Arithmetic: Percent of Decrease
[Free Registration/Login may be required to access all resource tools.] Find the percent of decrease.
Illustrative Mathematics
Illustrative Mathematics: 7.rp.3 Lincoln's Math Problem
The purpose of this task is for middle schoolers to solve a multi-step problem involving simple interest. The Aligns with 7.RP.A.3. The task provides both a problem and the solution.
Illustrative Mathematics
Illustrative Mathematics: 7.rp the Price of Bread
The purpose of this task is for students to calculate the percent increase and relative cost in a real-world context. This task is part of a set collaboratively developed with Money as You Learn, an initiative of the President's Advisory...
Illustrative Mathematics
Illustrative Mathematics: 6.ee,rp 7.ee,rp Anna in d.c.
The purpose of this task is to give young scholars an opportunity to solve a multi-step percentage problem that can be approached in many ways. Because the tax and tip in this problem are a fixed percentage of the cost of the meal, the...
Illustrative Mathematics
Illustrative Mathematics: 7.rp Tax and Tip
This site provides a problem with completed solutions for that problem. This problem covers the topic of sales tax and tips. The problem aligns with 7.RP.A.3.
National Council of Teachers of Mathematics
Ntcm: Math Challenge: Perplexing Percentages
Test your bargin shopping skills by figuring out which discount offers the greatest savings. A one page activity from the NCTM Math Challenges for Families series that focuses on understanding and calculating percentages. Connections...
Mangahigh
Mangahigh: Number: Use Percent to Find Original Value No Calculator
Use percents to determine the original value.
Mangahigh
Mangahigh: Number: Understand Percents
Determine percents to the tenths and hundredths place.