TeachEngineering
Teach Engineering: Estimating the Storage Capacity of a Cd/dvd
Students estimate the storage capacity of CDs and DVDs by assessing diffraction patterns of green and red laser beams.
Khan Academy
Khan Academy: Round Whole Numbers
Practice rounding whole numbers to the nearest hundred or thousand. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Round Whole Numbers Word Problems
Solve word problems by rounding whole numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Sophia Learning
Sophia: Practice Estimating: Lesson 4
This lesson should provide examples of how to make good estimations. It is 4 of 4 in the series titled "Practice Estimating."
Sophia Learning
Sophia: Practice Estimating: Lesson 1
This lesson should provide examples of how to make good estimations. It is 1 of 4 in the series titled "Practice Estimating."
Shmoop University
Shmoop: Ratios & Percentages: Estimating Percentages
The mathematics tutorial examines how to estimate percentages using shortcuts. Students learn about the concept through notes, examples, and practice problems.
Khan Academy
Khan Academy: Estimate Mass (Grams and Kilograms)
Practice estimating the mass of real life objects using grams and kilograms. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
![K 5 Math Teaching Resources: Estimate the Quotient [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "K 5 Math Teaching Resources: Estimate the Quotient [Pdf] Activity")
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Estimate the Quotient [Pdf]
This activitiy asks students to randomly select a one-digit divisor and a three-digit dividend and estimate the quotient mentally. Students must then explain why they believe their estimate is accurate.
Calculator Soup
Calculator Soup: Estimating Sums and Differences of Fractions Calculator
Estimate sums and differences for positive proper fractions, n/d (numerator/denominator). Use rounding to estimate answers when adding or subtracting proper fractions.
Other
Explore Learning: Estimating Population Size
Adjust the number of fish in a lake to be tagged and the number of fish to be recaptured. Use the number of tagged fish in the catch to estimate the number of fish in the lake. (Free usage is limited to five minutes per day.)
AAA Math
Aaa Math: Estimation
Improve your estimation and rounding skills with these interactive games that are challenging and fun. Excellent skills practice for rounding, estimating sums and differences, and front-end estimation. Links to lesson plans, teacher...
AAA Math
Aaa Math: Subtraction Using Estimation
This site explains how to estimate differences by rounding. Games and exercises are provided to practice the skill.
AAA Math
Aaa Math: Addition Using Estimation
This site explains how to estimate sums by rounding whole numbers. Games and exercises are provided to practice the skill.
Study Pad
Splash Learn: Add Decimals Using Models
[Free Registration/Login Required] This fun decimal addition worksheet introduces students to the world of operations with decimal numbers. Fifth graders use models to visualize the addition of numbers in the tenths and hundredths places...
CK-12 Foundation
Ck 12: Elem Math: Estimating the Metric Lengths of Objects by Image
[Free Registration/Login may be required to access all resource tools.] For this learning module, students must analyze the information they are given about the metric heights of three objects and answer questions that compare them....
CK-12 Foundation
Ck 12: Arithmetic: Decimal Subtraction
[Free Registration/Login may be required to access all resource tools.] Subtracting decimals with and without rounding
Soft Schools
Soft Schools: Estimation Word Problem Quiz
This word problem quiz will require you to make estimations based on the given information.
CK-12 Foundation
Ck 12: Arithmetic: Decimal Addition Using Front End Estimation
[Free Registration/Login may be required to access all resource tools.] Use front-end estimation to estimate decimal sums
University of Cambridge
University of Cambridge: Nrich: Games Estimating Angles
Use this game to improve your ability to create an angle with a specific number of degrees. You can set the angles to the size you want on this game. Just follow the instructions below it!
ClassFlow
Class Flow: Estimate Rounding
[Free Registration/Login Required] The teacher will use this lesson plan to review rounding, estimation, and computation.
CK-12 Foundation
Ck 12: Arithmetic: Small Decimal Rounding to a Leading Digit
[Free Registration/Login may be required to access all resource tools.] In this lesson students round small decimals to the place value of the leading digit. Students examine guided notes, review guided practice, watch instructional...
Shodor Education Foundation
Shodor Interactivate: Comparison Estimator
This activity allows the user to compare to quantities by estimating. Students use three types of estimations: counting, length, and area. An interactive activity and teacher resources are included.
Illustrative Mathematics
Illustrative Mathematics: 7.sp Estimating the Mean State Area
The table below gives the areas (in thousands of square miles) for each of the lower 48 states. This serves as the population for this study. Your task involves taking small samples from this population and using the sample mean to...
AAA Math
Aaa Math: Rounding Numbers to the Nearest Ten
This site explains how to round whole numbers to the nearest ten. The information on the site gives exercise problems and games to practice this skill in a fun and helpful way.
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