Estimating & Checking AnswersATI TEAS 7 cheat sheet

Catching an impossible result

4 key facts Reviewed Oct 2026

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Estimate First

Round each number, compute mentally, keep the ballpark

Eliminate

Discard answer choices that are the wrong magnitude or sign

Unit Check

Does the answer carry the unit the question asked for?

Reasonableness

A dose of 50 tablets or a weight of 900 kg is a setup error, not a rounding error

Key takeaway

Catching an impossible result

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