+
Activity
National Council of Teachers of Mathematics

The Math Forum: Finding 2.5 Percent of a Number

For Students 5th - 8th
This site provides shortcuts and hints on how to do more complicated percentages without a calculator. For others beside 2.5, scroll down the left column and click percentage of choice under "Percents."
+
Interactive
Mangahigh

Mangahigh: Number: Find Percents No Calculator

For Students 5th - 8th Standards
Explore percents and how to determine the percent of a number.
+
Interactive
Mangahigh

Mangahigh: Number: Find the Percent Change No Calculator

For Students 6th - 8th Standards
Test your knowledge of the percent of a number.
+
Activity
NumberNut

Number Nut: Percentages

For Students 9th - 10th Standards
Did you know that the word percent is based on two ancient words, "Per" and "Centum" which means part of one hundred? Learn how to calculate percent and find out how it is used in business.
+
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Percents 2

For Students 9th - 10th Standards
Twenty-eight problems present a variety of percent topics: percents as fractions, improper, and mixed numbers, percents as decimals, simple interest, and percent of increase/decrease. They are given with each step to the solution...
+
Activity
CK-12 Foundation

Braingenie: Whole Number Percentage Calculations Without Units

For Students 1st - 8th
[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.
+
Activity
Shmoop University

Shmoop: Ratios & Percentages: Working With Percents

For Students 9th - 10th Standards
Students learn how to find a percent of a number. The mathematics resource consists of examples and practice problems with answers.
+
Interactive
Mangahigh

Mangahigh: Number: Find the Percent Change Calculator

For Students 9th - 10th
Test your knowledge of finding the perent of a number.
+
Unknown Type
Math Drills

Math Drills: Percents Worksheets

For Students 9th - 10th
Download these worksheets to sharpen your percent calculation skills. Sheets focus on the percentage of a number, percentage rate, and percentage increase/decrease.
+
Activity
Education Development Center

Tune in to Learning: Multiple Percents

For Students 9th - 10th Standards
Have you ever seen an item that you wanted on sale for 15% of its original price? Have you tried to figure out what the sale price would be? Using this interactive lesson from T.V. 411, you can learn to calculate discounts with percentages.
+
Unit Plan
PBS

Pbs: The Lowdown: The Math of Trash: Percents and Proportions

For Students 6th - 8th
Discover how percents and proportions help explain issues like climate change, composting, and zero waste in this video from KQED. In the accompanying classroom activity, students estimate the percentage of various types of trash that...
+
Activity
Math Is Fun

Math Is Fun: Percentage Calculator

For Students 3rd - 8th
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.
+
Activity
Texas Instruments

Texas Instruments: Election Night With Percent

For Teachers 6th - 8th
The students will be working primarily with the concept of % of a number. They will calculate the number of people expected to vote when given the population and % of registered voters along with historical data on percentage of voter...
+
Interactive
Mangahigh

Mangahigh: Number: Find One Amount as a Percent of Another Calculator

For Students 6th - 8th Standards
Determine the decimal of a given percent.
+
Interactive
Mangahigh

Mangahigh: Number: Find Percents Calculator

For Students 6th - 8th Standards
Determine the decimal that is related to the percent.
+
Interactive
Mangahigh

Mangahigh: Number: Use Percent to Find Original Value No Calculator

For Students 9th - 10th
Use percents to determine the original value.
+
Unit Plan
Mangahigh

Mangahigh: Number: Percent Increase and Decrease No Calculator

For Students 6th - 8th Standards
Students learn about the concept of percent change by exploring a tutorial. They can then test their knowledge by taking a ten question assessment that increases in difficulty as they correctly answer questions.
+
Unit Plan
Mangahigh

Mangahigh: Number: Percent Increase and Decrease Calculator

For Students 6th - 8th Standards
Students learn about the concept of percent change by exploring a tutorial. They can then test their knowledge by taking a ten question assessment that increases in difficulty as they correctly answer questions.
+
Activity
Texas Instruments

Texas Instruments: Analyzing Number Cube Sums

For Teachers 6th - 8th
In this activity, students extend their understanding of theoretical probability and patterns. They use number cubes, to build awareness that a fraction and its decimal and percent representation on the calculator are "close," but not...
+
Interactive
Mangahigh

Mangahigh: Ice, Ice, Maybe: Fast Estimation With Basic Number Calculations

For Students 4th - 7th
Practice your arithmetic skills as you estimate the answer to questions involving addition, subtraction, multiplication, and division. Includes whole numbers, fractions, and percents. As you answer questions, you guide penguins across an...
+
Interactive
Mangahigh

Mangahigh: Number: Use Percent to Find Original Value Calculator

For Students 9th - 10th
Use the inverse operation to determine the original amount.
+
Interactive
Calculator Soup

Calculator Soup: Mixed Number to Percent Calculator

For Students 9th - 10th
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,...
+
Website
PBS

Pbs Learning Media: A Tip on Tipping

For Students 6th - 8th
This TV 411 segment features a lesson from Question Man on how to informally calculate 15% tips at restaurants.
+
Unit Plan
PBS

Pbs: The Lowdown: Percents Combined: Proportional Relationships With Multistep Ratio and Percent Problems

For Students 6th - 8th
Learn how to calculate sale price when combining two "percent-off" discounts in this video from KQED. In the accompanying classroom activity, students develop and share a variety of strategies, including modeling with a 10 x 10 grid to...