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Grade 4 · Year 5 · Class 4 · ages 9–10

Estimate sums and differences worksheets.

Free printable estimate sums and differences worksheets with answer keys. Rounding each number first to estimate an answer quickly. Choose the level and the number of questions, then download a PDF or print.

  • Grade 4
  • Year 5 · Class 4
  • Ages 9–10
  • PDF + print
  • Answer key
  • Free
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Sheet 83505. Change the options above or make a new worksheet.

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Estimate sums and differences

Grade 4 · Medium · 12 questions · Sheet 83505

Name Date Score / 12

  1. 1.Estimate 9,140 − 7,980 by rounding each to the nearest thousand:
  2. 2.Estimate 9,350 + 7,690 by rounding each to the nearest thousand:
  3. 3.Estimate 8,921 − 1,239 by rounding each to the nearest thousand:
  4. 4.Estimate 7,125 + 7,437 by rounding each to the nearest thousand:
  5. 5.Estimate 3,095 + 9,206 by rounding each to the nearest thousand:
  6. 6.Estimate 2,767 + 8,915 by rounding each to the nearest thousand:
  7. 7.Estimate 3,932 − 3,338 by rounding each to the nearest thousand:
  8. 8.Estimate 6,308 − 1,725 by rounding each to the nearest thousand:
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Estimate sums and differences

Grade 4 · Medium · 12 questions · Sheet 83505

Name Date Score / 12

  1. 9.Estimate 2,476 − 2,358 by rounding each to the nearest thousand:
  2. 10.Estimate 3,933 + 7,941 by rounding each to the nearest thousand:
  3. 11.Estimate 5,822 − 4,399 by rounding each to the nearest thousand:
  4. 12.Estimate 8,957 − 4,258 by rounding each to the nearest thousand:
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About estimate sums and differences worksheets

Rounding each number first to estimate an answer quickly. This worksheet maker is aimed at Grade 4 (Year 5, Class 4) (ages 9–10) and makes new questions every time, with the answers worked out by a maths engine.

Teaching tip

Round each number to the place the question names, then add or subtract the rounded numbers in your head.

What the three levels look like

  • Easy: Estimate 1,919 + 5,449 by rounding each to the nearest thousand: ___
  • Medium: Estimate 8,308 + 4,462 by rounding each to the nearest thousand: ___
  • Challenge: Estimate 9,219 + 5,493 by rounding each to the nearest thousand: ___

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FAQ

Estimate sums and differences worksheets: questions

What grade are estimate sums and differences worksheets for?

Estimate sums and differences is usually taught around Grade 4 (Year 5, Class 4), for ages 9–10. Every grade has an easy, medium and challenge level, so you can go back to an earlier level or push ahead.

Do these estimate sums and differences worksheets include an answer key?

Yes. Press Download PDF with the answer key switched on and the last page lists every answer. Turn the key off for a clean student copy.

Can I make a new worksheet with different questions?

Yes. Press New worksheet for a fresh set of questions. Each sheet has a sheet number printed on it; open this page with the same level, question count and number to get exactly the same sheet again.

How do I help a child who finds estimate sums and differences hard?

Round each number to the place the question names, then add or subtract the rounded numbers in your head. Start with the easy level, and practise a few minutes every day rather than one long session.

Why is number sense important?

Children with good number sense estimate well, spot unreasonable answers and learn new topics faster because they understand why the rules work.

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