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# ESTIMATION .

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ESTIMATION. Three Types of Estimation Measurement Estimation Quantity Estimation Computational Estimation If I can drive 326 miles on 15 gallons of gasoline what is my approximate mpg? Is 10 dollars enough to buy 5 drinks that cost \$2.19 each?.
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﻿ESTIMATION Three Types of Estimation Measurement Estimation Quantity Estimation Computational Estimation If I can drive 326 miles on 15 gallons of fuel what is my rough mpg? Is 10 dollars enough to purchase 5 drinks that cost \$2.19 each?

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Determine a number that is the estimate of a calculation. Not a figure, includes some type of thinking. Now and then knowing whether the outcome is pretty much than a number is adequate. A Computational Estimate

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Multi-Digit Numbers Can be based upon or dismantled in a wide assortment of ways. Utilize less demanding to-handle parts of numbers to make gauges. Calculation should then be possible rationally.

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Multi-Digit Numbers Substitute "pleasant" numbers for hard ones Computation should then be possible rationally.

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Computational Estimation Use an assortment of procedures created after some time Find Real Examples of Estimation Accept a Range of Estimates Focus on Flexible Methods NOT Answers

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Understanding Computational Estimation Use the Language of Estimation "About" "Close" "Pretty much" "somewhat more than" "somewhat less than" "Between""

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Understanding Computational Estimation Estimating Without Estimates Over or Under? 37+75 Over or Under 100 712-458 Over or under 300 319/45 Over or under 6

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Understanding Computational Estimation Estimating Without Estimates High or Low 736 x 18 750 x 10 730 x 15 700 x 20 750 x 20

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Computational Estimation Strategies Three techniques for Computational Estimation Front End Rounding Compatible (pleasant/neighborly) Numbers In every one of the three- - make an underlying appraisal and after that conform if need be.

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Front End Methods 487 + 31 + 710 400+0+700=1100 Adjust to 1200 421/59 400/60=less than 7 Adjust to 7

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Rounding Methods \$48.17+\$1.89+\$24.95 \$50+\$0+\$20=70 Adjust to \$72 \$4.17 x 6 \$4 x 6 = \$24 Adjust \$25

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