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Estimating Answers to Math Problems

Estimating is a powerful self-check tool.  With good estimating skills, students can check their own thinking and work.  

There are 6 videos in this category and 0 videos in 0 subcategories.

Category Videos
Not Right For WatchKnowLearn
Ages: 10 - 18
How Many Peas Fill the Classroom?
From teachingchannel.org, produced by The Teaching Channel
Lesson Objective: Students estimate and measure peas and room size to learn about volume. Questions to Consider: Why is it important for students to design a plan before beginning?What different measuring approaches did students use?Ms. Slusar shares... [more]
January 28, 2012 at 12:28 AM
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Not Right For WatchKnowLearn
Ages: 7 - 12
Estimating Sums and Differences - by StudyJams
From scholastic.com, produced by Scholastic
For estimating sums and differences of whole numbers, try out these two strategies:  rounding and front-end estimation.  Learn more about estimation with this step-by-step, interactive video from StudyJams.  A short, self-checking quiz is also includ... [more]
June 10, 2011 at 05:40 PM
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Not Right For WatchKnowLearn
Ages: 9 - 14
Estimating Sums and Differences
From YouTube, produced by YourTeacher.com
Students learn to estimate a sum or difference by first rounding each numeral to the place specified in the problem. For example, to estimate 4,909 + 3,217 by rounding each number to the nearest thousand, first round 4,909 up to 5,000, and round 3,21... [more]
July 13, 2009 at 07:00 PM
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Not Right For WatchKnowLearn
Ages: 6 - 12
How Many Jelly Beans?
From pbslearningmedia.org, produced by Thirteen/WNET New York
In this video segment from Cyberchase, Inez is baking 50 cookies for her class and each cookie has to have four jelly beans on top. Inez has a jar full of jelly beans. She knows she needs at least 200 jelly beans, but rather than count all of the jel... [more]
February 21, 2012 at 12:05 AM
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Not Right For WatchKnowLearn
Ages: 7 - 12
Estimating Distance and Travel Time
From pbslearningmedia.org, produced by Thirteen/WNET New York
In this video segment from Cyberchase, the CyberSquad is trying to get to Crab Kingdom. First, they must estimate how far the trip is in order to determine how much power they need in their underwater bikes to complete the mission. Since each vehicle... [more]
February 20, 2012 at 04:30 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
From YouTube, produced by Michael Milford
Lear about guesstimating, or the art of making reasonable estimates to check your answers in Maths.  Some simple examples are explained of estimating on a whiteboard.
May 4, 2010 at 03:57 PM
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