Math Worksheets Land
Percent Error and Percent Increase - Independent Practice Worksheet
Give your learners a small taste of the business world by calculating percent error and percent increase. The resource provides several practice problems to give your mathematicians practice setting up the ratio to convert to percents....
Math Worksheets Land
Percent Error and Percent Increase - Guided Lesson
When prices and numbers change, can you calculate by how much? Here is a worksheet that introduces the idea of percent change and percent error to calculator how much change the information goes through. Use the worked-out solutions to...
Math Worksheets Land
Percent Error and Percent Increase - Matching Worksheet
Calculating percent change is a handy tool to understand sales, discounts, and other numerical changes we come across. Here, worksheet practices percent change and percent error with a variety of problems to let your learners see how it...
Curated OER
Finding Percentages
Here is an approach to calculating percent with 16 practice problems to solidify the skill. Two examples demonstrate dividing by 100 to get one percent and then multiplying by the percentage in question to get the solution. Learners find...
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.
EngageNY
Margin of Error When Estimating a Population Mean (part 1)
We know that sample data varies — it's time to quantify that variability! After calculating a sample mean, pupils calculate the margin of error. They repeat the process with a greater number of sample means and compare the results.
EngageNY
Margin of Error When Estimating a Population Mean (part 2)
Don't leave your classes vulnerable in their calculations! Help them understand the importance of calculating a margin of error to represent the variability in their sample mean.
EngageNY
Margin of Error When Estimating a Population Proportion (part 1)
Use the power of mathematics to find the number of red chips in a bag — it's a little like magic! The activity asks learners to collect data to determine the percentage of red chips in a bag. They calculate the margin of error and...
EngageNY
Margin of Error When Estimating a Population Proportion (part 2)
Error does not mean something went wrong! Learners complete a problem from beginning to end using concepts developed throughout the last five lessons. They begin with a set of data, determine a population proportion, analyze their result...
NASA
Next Generation Spacecraft—Orion
What is the cross-sectional area of the Orion spacecraft? Groups work together to estimate the area of a cross section of the Orion spacecraft by first counting the number of grids a scale drawing covers. Pupils also employ a method...
Kenan Fellows
Density
Most scholars associate density with floating, but how do scientists determine the exact density of an unknown liquid? The third lesson in a seven-part series challenges scholars to find the mass and volume of two unknown liquids. Each...
Curated OER
Markup and Discount
Seventh graders observe and demonstrate how to calculate markups and discounts including markup percentages and discount percentages. They observe a teacher-led demonstration, then in pairs read scenarios and independently complete...
Curated OER
Ratio, Rates and Percentages
In this ratio, rates and percentages instructional activity, 8th graders solve 22 various types of problems related to ratios, rates and percentages. They first write ratios in lowest terms and describe each of comparison stated....
EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson plan of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the...
Curated OER
Percent of Change
In this algebra worksheet, students convert between percents and decimals. They calculate sales tax, discounts and relative errors. There are 4 questions with an answer key.
Teach Engineering
About Accuracy and Approximation
How accurate are robots? Groups draw lines by moving robots backwards and forwards by one rotation of the wheels. Using the appropriate formula, they determine the percent error in the length of the lines in relation to the calculated...
Noyce Foundation
Pizza Crusts
Enough stuffed crust to go around. Pupils calculate the area and perimeter of a variety of pizza shapes, including rectangular and circular. Individuals design rectangular pizzas with a given area to maximize the amount of crust and do...
Noyce Foundation
Mixing Paints
Let's paint the town equal parts yellow and violet, or simply brown. Pupils calculate the amount of blue and red paint needed to make six quarts of brown paint. Individuals then explain how they determined the percentage of the brown...
Virginia Department of Education
Sales Tax and Tip
Don't forget to tip your server. Future consumers learn how to calculate sales taxes and tips. Pairs use actual restaurant menus to create an order and determine the total bill, including taxes and tips.
Curated OER
Basketball Calculating Percentage
Seventh graders calculate percentages, convert fractions to decimals, and decimals to fractions using information from a basketball game.
Illustrative Mathematics
Eratosthenes and the Circumference of the Earth
The class gets to practice being a mathematician in ancient Greece, performing geometric application problems in the way of Eratosthenes. After following the steps of the great mathematicians, they then compare the (surprisingly...
Curated OER
Go Figure! Using Percents in the Real World
Sixth graders solve sales tax problems. In this solving sales tax problems lesson, 6th graders find the sales tax on various items. Students are given a list of expenses that a family spent on vacation before taxes. Students determine...
Texas Instruments
Math TODAY for TI-Navigator System - Is Leisure Time Really Shrinking?
High schoolers organize data from the USA TODAY Snapshot, "Is leisure time really shrinking?" into two scatter plots and determine the quadratic model for each scatter plot. They determine if these graphs intersect and learn the concept...
Houghton Mifflin Harcourt
Random Samples: Estimating Population
With this estimating populations assignment, your class will learn about taking random population samples and calculating the average number of species in the samples to estimate the total population. Students use the given data to find...