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5th Grade Math

Checking for Reasonableness

Learn Checking for Reasonableness in 5th Grade Math from the production AIPH study guide.

Study guide topics

Multi-Digit OperationsMeasurement and ConversionsUnderstanding Data and GraphsOrder of Operations and ExpressionsDecimals and FractionsVolume and GeometryMath in Cooking and BakingMoney and BudgetingPlanning Events Using DataShowing Your WorkChecking for Reasonableness

Study Strategies

## Make Sure Your Answers Make Sense After solving a problem, always ask: does this answer seem right? Estimating before and after solving helps catch silly mistakes. ### How to Check - Round numbers to make a quick estimate. - Compare your answer to your estimate. - If your answer is way off, try the problem again!

Examples

  • Estimate 199 + 202 as about 400, so the exact answer should be close.
  • Check if your answer for a measurement is bigger or smaller than the objects involved.
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