To make an educated guess. for instances if you were asked to estimate half of 1426, you would round down to to 1400, and half that which is much easier.
Half of that that is 700, therefore you would estimate the answer to be around 700.
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It means an approximate value that is calculated rather than an exact value. A value may be estimated because it is quicker or simpler to estimate an approximate value or because there is simply no way to obtain the true value analytically.
An estimated math answer is one that is guessed based on what you know without actually doing the problem.
it is the total (estimated) area of the universe, measured in either kilometers or meters
what does key mean in math
figure math means figure math
the mean (in math) is the average of all the numbers in the problem