Curated OER
Lab-Percent of Composition of KClO3
High schoolers find the percent composition of oxygen in potassium chlorate. In this percent composition lesson plan, students heat a sample of potassium chlorate to decompose it into potassium chloride and oxygen. They weight their...
Central New Mexico Community College
Percent Word Problems
Take young mathematicians' understanding of percents into the real world with this series of word problems. Involving a variety of contexts from calculating scores on math tests and savings account interest, to determining sale prices...
National Security Agency
Partying with Proportions and Percents
Examine ratios and proportions in several real-world scenarios. Children will calculate unit rates, work with proportions and percentages as they plan a party, purchase produce, and take a tally. This lesson plan recommends five...
101 Questions
Amazon Percent Discount
Everyone loves a good sale! A straightforward lesson provides practice with calculating a percent off of a product. Using ads from Amazon, individuals calculate the percent off the ad does not show. Pupils see the answer after revealing...
Common Core Sheets
Adding and Subtracting Percents and Decimals
Seventh graders are challenged to find the sums and differences of percents and decimals. But first, pupils must find the value of the percent in order to add/subtract it from the decimal.
Council for Economic Education
Calculating Simple Interest
How much is owed? A calculated resource introduces the simple interest formula with a video that describes how to use it. Classmates then show what they know by answering questions within a simple interest worksheet.
Curated OER
Limiting Reagents and Percent Yield Problems
Twelve questions about the various calculations of mass and yield are given here. There is significant practice of molarity calculations and consideration of the reactant and product balance.
Illustrative Mathematics
The Price of Bread
As part of an initiative to strengthen our young adults' financial understanding, this problem explores the cost of bread and minimum wage since the 1930s. Learners are asked to find the percent increase from each year and compare it...
Willow Tree
Percent of Change
Your car decreases in value from $20,000 to $17,000. What percent of the value have you lost? Pupils answer word problems by determining the percent of change.
EngageNY
Fluency with Percents
Pupils build confidence working with percents as they work several types of percent problems to increase their fluency. The resource contains two sets of problems specifically designed to build efficiency in finding solutions of basic...
Illustrative Mathematics
Comparing Years
Who knew that the Egyptian, Julian, and Gregorian year were different lengths? Your mathematicians will! They will have to calculate the difference between the years in seconds and find the percent change. Using dimensional analysis,...
EngageNY
Finding One Hundred Percent Given Another Percent
Class members solve problems to find the whole when given a percent. They use double line numbers and factors of hundred to help break the 100 percent into equal segments.
CK-12 Foundation
Overview of Percents: Play Checkers
Bet classes didn't know playing checkers help with understanding percents. An interesting interactive has pupils consider a series of moves in checkers. It then requires them to answer a set of challenge questions on percentages...
Curated OER
Fractions, Decimals, and Percents Got You Down? "Tri" This!
Have your class design their own mathematical study aids. Learners collaborate in groups on the design of tri-fold presentation describing the relationships between mathematical computations. Then, they write a business letter to the...
Curated OER
Lab: Percent of Composition of KClO3
Students find the percent of oxygen in potassium chlorate. In this percent composition lesson plan, students heat a solution of potassium chlorate using a catalyst, manganese dioxide, to decompose the potassium chlorate and release...
Noyce Foundation
Percent Cards
Explore different representations of numbers. Scholars convert between fractions, decimals, and percents, and then use these conversions to plot the values on a horizontal number line.
Math Worksheets 4 Kids
Percent into Decimal
Young business entrepreneurs will need to know how to calculate interest rates before making millions. Empower their knowledge with a worksheet on converting percents into decimals.
Curated OER
Calculate Percentages
Sixth and seventh graders study the concept of finding the percent of a number. They calculate the percent of any given number. Pupils describe ways to use calculating percents in their daily life, and change percents into decimals,...
Curated OER
Theoretical Yield and Percent Yield in Chemical Reaction
In this stoichiometry worksheet, students solve several problems using the stoichiometric method. Students find the percent, theoretical, and actual yield for all problems presented.
Curated OER
Calculating Probabilities: Introduction
Introduce your class to a sure-fire method for calculating probabilities. The method is described alongside several examples, then put into practice with a series of probability questions for the class to solve. This would be a great...
Curated OER
Chinese New Year: A Simple Lesson in Debt, Percent, and Loan Interest
Students study Chinese New Year traditions while investigating the concepts of percent and loan interest. They apply the concepts to calculate the total debt on monies borrowed.
Curated OER
Non Calculator Math Quiz
Here is a quiz which does not allow calculators. Kids solve a variety of problems that range from addition and subtraction of decimal numbers to probability and perimeter. There are 24 problems to solve. As stated on the resource, this...
Curated OER
Percents
There are many ways to look at percentages. Here are eight problems to practice the different ways to calculate percentages based on how the question is asked. There are no examples, just practice problems.
Curated OER
Family Activity - Color by Numbers: Fractions, Decimals, and Percents
Learners solve four short answer problems. They determine the number of each color of candy or paper clip in a bag, and calculate the fractional, decimal, and percentage representation of the color compared to the total number of items.