Using Rounding to Check Answers

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Using Rounding to Check Answers - estimate, approximate, checking

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  • Great activity, however, there is a mistake on the sheet. On Q3 in the top section, it says that 235.3 + 258.9 = 512.12 . The rounding gives an estimate of 500, suggesting the calculation is correct but it is actually incorrect. The answer is 494.2.

    , Oct 12th
    • Hi MadameRosbif,
      Thanks for your comment. Our team are looking into this as we speak. We'll be in touch as soon as we have an answer :)

      , Oct 12th
    • Hi there MadameRosbif,
      Thank you for spotting this! Our lovely teacher and design teams have updated this resource and you can now download the new version. I hope you find it useful!

      , Oct 13th
  • Thanks - a really helpful resource!

    , Sep 28th
    • Hi pippinstwilfs,
      You're very welcome, glad we could help! :)

      , Sep 28th
  • Use as homework.

    , Jan 6th
The answers to these calculations are already provided. All you have to do is use your rounding and estimation skills to judge whether they are likely to be correct.
This resource is available in Standard and Editable.
  • Homepage » Key Stage 2 » Maths » Calculation
  • Homepage » Home Education » Subject Resources » Maths
  • Homepage » Home Education » Subject Resources » Maths » Calculations
  • Homepage » Australia » Australian Curriculum Browser » Maths » Year 5 » Number and Algebra » Number and Place Value » Use estimation and rounding to check the reasonableness of answers to calculations (ACMNA099)
  • Homepage » Australia » Victoria Curriculum Browser » Maths » Year 5 » Number and Algebra » Number and Place Value » Use estimation and rounding to check the reasonableness of answers to calculations (VCMNA182)
  • Homepage » 2014 National Curriculum Resources » Maths » Key Stage 2 » Year 5 » Number - Addition and Subtraction » Use rounding to check answers to calculations and determine, in the context of a problem, levels of accuracy
  • Homepage » 2014 National Curriculum Resources » Maths » Key Stage 2 » Year 6 » Number - Number and Place Value » Round any whole number to a required degree of accuracy
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    • Twinkl updated the Main Version on Oct 17th
    • Twinkl added Editable Version on Oct 28th
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