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TEAS MathematicsHow far off

Percent Error & ToleranceATI TEAS 7 cheat sheet

How far off

5 key facts 5 practice questions Reviewed Oct 2026
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Formula

  • |measured − actual| / actual × 100
  • Always uses the actual value as the base

Interpreting

  • Smaller percent error means a more accurate measurement

Tolerance

  • An allowed range around a target — 'within 5%'

Clinical

  • Dose checks and calibration use the same comparison
Key takeaway

How far off

Before you read

Test yourself first: 5 questions

Question 1 of 5

12 is what percent of 48?

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