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,...
Math Is Fun
Math Is Fun: Percentage Calculator
Use this percentage calculator to "calculate a percent of a value" or "find the percent change between two values." Provided answers include steps for carrying out the calculations yourself.
PBS
Pbs Learning Media: A Tip on Tipping
This TV 411 segment features a lesson from Question Man on how to informally calculate 15% tips at restaurants.
Alabama Learning Exchange
Alex: Genetics: Peas to Blood Types
Learners will complete an online tutorial about what makes up a person's blood type, how blood types are determined, and which blood types can transfuse safely.
Science Education Resource Center at Carleton College
Serc: Mineral Density: Teaching Accuracy, Slope, and Percent Error
Students explore the meaning of density and use their math skills to graph mass/volume data, write an equation for a line, and interpret the slope of the line. Students also find the density of two unknown mineral samples and use those...
Oswego City School District
Regents Exam Prep Center: Percents of Increase, Decrease, Discount
Use this lesson with examples in planning instruction on percent of increase, decrease, and discount. In this resource, you'll find three questions with solutions on ways to determine percent.
Shodor Education Foundation
Shodor Interactivate: Mixtures
This activity will help students develop their understanding of percents and proportional reasoning by solving mixture problems. Working with two piles of circles the student determines the number in each pile that will be colored. In...
Mangahigh
Mangahigh: Number: Find One Amount as a Percent of Another No Calculator
When given a word problem determine the fraction.
CK-12 Foundation
Braingenie: Whole Number Percentage Calculations Without Units
[Free Registration/Login may be required to access all resource tools.] In this activity, students are to determine the percent of a number. Watch a video for additional help and answer a practice problem.
Khan Academy
Khan Academy: Markup and Commission Word Problems
Practice solving word problems involving price markups and commission fees. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Arithmetic: Tip Estimation
[Free Registration/Login may be required to access all resource tools.] In this lesson students estimate 15% of a total price to estimate tips. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Khan Academy
Khan Academy: Discount, Tax, and Tip Word Problems
Practice solving word problems involving price discounts, taxes, and tip calculations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
AAA Math
Aaa Math: Determining Percentage
This lesson explains how to determine the percent of one number compared to another. Includes practice and games to practice this skill.
Calculator Soup
Calculator Soup: Percentage Calculator
Find a percentage or work out the percentage given numbers and percent values. Use percent formulas to figure out percentages and unknowns in equations. Add or subtract a percentage from a number or solve the equations.
Government of Alberta
Learn Alberta: Exploring Combined Percentages
Combined percentages are introduced in this video through analyzing plays in football. Be sure to follow the interactive activity link for students to explore combined percentages representing the number of completed passes for 2 games....
PBS
Pbs: The Lowdown: Understanding Inflation: A Stop Motion Explainer, Parts 1 and 2
Explore a real-life application of percentage-the math behind rates of inflation-in two animated videos about inflation from KQED. The first video provides an overview of inflation; the second explains the role of inflation in a healthy...
National Council of Teachers of Mathematics
Nctm: Figure This: Does Drinking Soda Affect Your Health?
Try this "Real world," challenge taken directly from the today's health journals. Use your problem solving, data analysis, and number sense skills to figure out if soda intake among teenage girls is related to incidences of broken bones....
PBS
Pbs: The Lowdown: What You Need to Know About Immigration Reform
Interpret graphs showing changes over time in the percentage of foreign-born US residents and in annual deportations in this interactive from KQED. In the accompanying classroom activity, students use the interactive and look at how...
AAA Math
Aaa Math: Adding Three Numbers
Find an explanation on how to add three numbers together using pencil and paper. There is also an online game that will keep running totals of your correct and incorrect answers. The lesson also gives you a percent score of the correct...
McGraw Hill
Glencoe: Self Check Quizzes 2 Mean, Median and Mode
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of finding the mean, median and mode. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page...
McGraw Hill
Glencoe: Self Check Quizzes 1 Geometry Area of Rectangles
Use Glencoe's randomly generated self-checking quiz to test your knowledge of finding the area of rectangles. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...
McGraw Hill
Glencoe: Self Check Quizzes 1 Greatest Common Factor
Use Glencoe's randomly generated self-checking quiz to test your knowledge of how to find the greatest common factor. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click...
McGraw Hill
Glencoe: Self Check Quizzes 1 Coordinate Plane
Use Glencoe's randomly generated self-checking quiz to test your knowledge of locating points on the coordinate plane. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click...
McGraw Hill
Glencoe: Self Check Quizzes 2 Simple Interest
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of simple interest. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...