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VC2M4N07 Official strand: Number

Rounding and sensible estimates

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Use nearby values to estimate and check whether an answer is reasonable.

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What is 150 rounded to the nearest 10?

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Answer: 150

  1. The neighbouring multiples are 150 and 160.
  2. Choose the closer one; if exactly halfway, choose the greater one.
  3. The answer is 150.

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Curriculum reference

Victorian Curriculum F–10 Version 2.0

VC2M4N07

choose and use estimation and rounding to check and explain the reasonableness of calculations, including the results of financial transactions

These quizzes practise concepts within this topic. Multiple-choice answers alone do not demonstrate drawing, conducting an investigation or using a digital tool.

Activities to practise beyond the quiz

  • Worked explanations teach reasonableness checks, but selecting an answer does not assess a learner's independently written or spoken explanation.
  1. VC2M4N07-C01Choose an appropriate estimation strategy.
  2. VC2M4N07-C02Use estimation to assess calculations.
  3. VC2M4N07-C03Choose an appropriate rounding strategy.
  4. VC2M4N07-C04Use rounding to assess calculations.
  5. VC2M4N07-C05Check whether calculation results are reasonable.
  6. VC2M4N07-C06Explain why calculation results are or are not reasonable.
  7. VC2M4N07-C07Apply reasonableness checks to financial transactions.

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Skills in this topic

Traceable coverage

Subskills

Supplied alignment skills

  1. 01Rounding
  2. 02Round decimals
  3. 03Round to the nearest five cents
  4. 04Round to the nearest five cents: word problems
  5. 05Round to the nearest dollar or more
  6. 06Round decimals to the nearest whole number
  7. 07Estimate sums
  8. 08Estimate sums: word problems
  9. 09Estimate differences
  10. 10Estimate differences: word problems
  11. 11Estimate products: multiply by one-digit numbers
  12. 12Estimate products: word problems
  13. 13Estimate products: multiply by two-digit numbers
  14. 14Estimate to compare quotients
  15. 15Estimate quotients: word problems
  16. 16Estimate sums, differences, products and quotients: word problems
  17. 17Multi-step word problems: identify reasonable answers
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