Mammoth Memory

Estimating

Estimations should be used to check all your calculations.

Estimating is carried out by choosing the best way to round and also deciding how accurate the estimation needs to be.

Piggy bank using estimates to check that they havent pressed the wrong keys on the calulator 

Estimations provide you with a rough answer so that you know that you haven't pressed the wrong keys on a calculator.

There are various techniques you should know.

 

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