en.wikipedia.org/wiki/Estimation

Estimation (or estimating) is the process of finding an estimate, or approximation,
which is a ... In mathematics, approximation describes the process of finding
estimates in the form of upper or lo...

www.mathsisfun.com/numbers/estimation.html

As you walk around and live your life, imagine if you could easily estimate: how
much a bill will be, ... In mathematics we often stress getting an exact answer.

www.ask.com/youtube?q=How Do You Estimate in Math?&v=MD1aR1FzNNI

Aug 31, 2011 ... How to estimate the answers to arithemtic problems by estimating.

www.math.com/school/subject1/lessons/S1U1L3GL.html

Estimating is an important part of mathematics and a very handy tool for everyday
life. Get in the habit of estimating amounts of money, lengths of time, distances, ...

www.ixl.com/math/grade-4/estimate-sums

Fun math practice! Improve your skills with free problems in 'Estimate sums' and
thousands of other practice lessons.

www.mathgoodies.com/lessons/decimals_part2/estimate_products.html

To solve this problem, we will estimate the product of these decimal factors.
There are many strategies that we could use. Let's try the two strategies shown ...

www.skillsyouneed.com/num/estimation.html

More Advanced Mathematical Concepts. Simple Equations ... Rounding is often
the key skill you need to quickly estimate a number. This is where you make a ...

www.softschools.com/math/topics/front_end_estimation/

... Timelines · Login · Home > Math > Topics > Front End Estimation ... Use front
end estimation to determine the sum of 78,251 and 2,335,041. We keep only one
...

www.khanacademy.org/math/in-sixth-grade-math/knowing-numbers/new-topic-2015-11-17T22:50:37.680Z/v/multiplying-whole-numbers-and-applications-4

Estimating the product of two, 2-digit numbers. ... Multiplication estimation
example. AboutTranscript. Estimating the product of two, 2-digit numbers.
Created by ...

www.basic-mathematics.com/rounding-and-estimating.html

Rounding and estimating to the nearest ten, hundred, thousand. Learn also
compatible numbers and front end estimation.