EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the size...
Curated OER
Questioning NASA
Space science and math collide in this inquiry that investigates launching times for antacid-tablet rockets! Upper elementary or middle school learners collect data as they launch these mini rockets. They apply concepts of place value...
Balanced Assessment
Sales Tax Table
Sales tax rates vary; do the math to find the right rate! Pupils use before tax amounts and after tax amounts to determine the tax rate. Rounding makes the task challenging.
Indiana Science
How Many E’s?
Seventh graders explore random sampling by estimating the number of e's on the newspaper. They explain the possible error sources for this type of sampling, and compare the accuracy of sampling a small and large population. This is a...
Illustrative Mathematics
Equivalent fractions approach to non-repeating decimals
Trying to get your class to think of decimals as fractions and vice versa can lead to interesting discussions. After all, we can usually understand quickly that 1/4 is .25 but why is 1/7 not so easy to convert? This activity looks...
Alabama Learning Exchange
Comparing Fuel Economy
Compute fuel economy and gas mileage. Why? So you can teach rates and ratios, of course! Middle schoolers calculate the rate of miles per gallon for various vehicles. They research each vehicle, its mileage per gallon, and cost per...
Virginia Department of Education
Classifying Angles
Don't be obtuse, this geometry unit is the just the right resource for educating the acute young minds in your class. From classifying and measuring angles, to determining the congruence of shapes, this...
Curated OER
Expert Estimators
A rich and well-designed lesson on estimation is here for you. The lesson utilizes a video; ITV Series: The Eddie Files 'Estimation: Going to the Dogs,' along with many websites. Several fantastic learning activities are...
Curated OER
In the Ballpark
Students practice estimation skills with the video series "Interactions: Real Math, Real Careers". They complete a hands-on activity for estimating large numbers.
Curated OER
Estimating With Decimals
In this math activity, students complete 14 problems where they estimate money amounts and multiplication products using numbers with decimals. Examples are provided in this well-designed activity.
Curated OER
Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences lesson, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
Curated OER
Estimating With Fractions
Seventh graders, exploring methods to estimate fractions, take notes on estimating fractions, 7th graders write letters to explain the process of estimating fractions and mixed numbers to someone who does not know the concept. Students...
Curated OER
Round Decimals to the Nearest Tenth
Use this rounding decimals worksheet to have your charges round a set of 18 decimals numbers to the nearest tenth. Answers are included on page 2.
T. Smith Publishing
Estimate Products of Mixed Numbers
Practice, practice, practice! There are 35 problems to solve on this handout, all of them involving the multiplication of mixed numbers. Although the publisher has tagged it as designed for several Common Core standards, there are no...
Curated OER
Estimating Solutions to Word Problems
Fourth graders explore number sense by completing word problems in class. In this estimation lesson, 4th graders define terms such as sum, difference, estimate and best. Students complete estimating worksheets based on the concept of...
Curated OER
Estimating
In this estimating worksheet, students solve 6 different problems that include some form of estimation in each. First, they define estimate as a way to round their answers sensible and carry out the calculation by hand. Then, students...
Curated OER
Estimating Quotients
In this estimating quotients worksheet, 4th graders estimate the quotient in 12 math problems and write the numbers they used on the lines provided.
Curated OER
Revise Rounding to the Nearest Thousand
In this rounding worksheet, students read about rounding, then round a set of 20 numbers to the nearest thousand. Answer included on page 2.
Curated OER
Estimation in Multiplication
In this math worksheet, students multiply single digit numbers by two and three digit numbers. Students estimate by rounding the largest number to its leading digit. Students complete two word problems that illustrate applications of...
Curated OER
Estimating and Rounding-Pretest Questions
In this estimating and rounding worksheet, students complete a set of 10 multiple choice questions. Students may click on a link for answers or to print page.
Curated OER
Round Each Number to the Nearest Thousand
In this rounding off instructional activity, learners round off eight four-digit whole numbers to the nearest thousand. Students write their answers on the instructional activity.
Curated OER
End of the Year Math Terms
In this end of the year math test worksheet, 4th graders complete problems including addition, division, measurement, decimals, and more. Students complete 22 problems.
Curated OER
Estimating Sums
In this estimating sums worksheet, students, working with a partner, practice problem solving five word problems involving estimation.
Curated OER
Decimals-Round to Nearest Hundredth
Learners round a set of decimal numbers to the nearest hundredth. Answers are included on page 2.