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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?

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

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.

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

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

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

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

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

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.

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

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

Compatible Numbers 41+29+63+17+65+85 41+63=about100 29+65=about 100 17+85=about 100 300-change in accordance with more than 300

Compatible Numbers 371/21 400/20=20 Adjust to a couple of under 20 69-27 67-27=40 Adjust to more than 40

Estimating with Fractions, Decimals, and Percents Represent Most Real-World Estimations Connect to Computational Skill Development