Estimate and check a sensible answer
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Round 1.347 to the nearest tenth.
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Answer: 1.3
- Keep the tenths place and inspect the next digit.
- The two nearest multiples of 0.1 surround the number; the nearer is 1.3.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Use estimates that suit the decision, including spending decisions.
Read the official VCAA curriculum description (VC2M5N08)
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Activities to practise beyond the quiz
- Supported by the guided activity; selecting an MCQ does not demonstrate this action.
- VC2M5N08-C01The useful accuracy depends on the question. A rough estimate helps check magnitude, while a close budget decision may require exact cents.
- VC2M5N08-C02Round decimals and estimate calculations, distinguishing a rounded final result from a cautious upper estimate of spending.
- VC2M5N08-C03Compare an estimate with both the calculated answer and the decision being made. Say whether the estimate is an upper bound, lower bound or a nearest-value approximation.
- VC2M5N08-C04Choosing an estimation strategy and explaining the financial decision.
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Subskills
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Descriptor-derived subskills
- D01Round to useful nearby numbersThe useful accuracy depends on the question. A rough estimate helps check magnitude, while a close budget decision may require exact cents.
- D02Round calculations and check spendingRound decimals and estimate calculations, distinguishing a rounded final result from a cautious upper estimate of spending.
- D03Explain the purpose of an estimateCompare an estimate with both the calculated answer and the decision being made. Say whether the estimate is an upper bound, lower bound or a nearest-value approximation.