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Measures and accuracy
Measures and accuracy focuses on estimation, bounds, rounding, significant figures and sensible checks so numerical answers match the precision and units required by the question.
6
Objectives
30
Flashcards
30
Questions
90 min
Study time
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Syllabus checklist
What you need to know
6 objective pages available
Standard units and compound measures2 objectives
- [Foundation and Higher] Use standard units of mass, length, time, money and other measures, including compound measures, with decimal quantities where appropriate.
- [Foundation and Higher] Use metric conversion factors for length, area, volume and capacity when required.
Estimation and checking1 objectives
- [Foundation and Higher] Estimate answers and check calculations using approximation and estimation, including answers obtained using technology.
Rounding and simple error intervals2 objectives
- [Foundation and Higher] Round numbers and measures to an appropriate degree of accuracy.
- [Foundation and Higher] Use inequality notation to specify simple error intervals caused by truncation or rounding.
Limits of accuracy and bounds1 objectives
- [Higher only] Apply and interpret limits of accuracy, including upper and lower bounds.
Key terms
unitsmetric conversionestimationfoundationroundinglimits of accuracy
Exam tips
- Standard units and compound measures exam tip 1: Write the method before the answer so the examiner can follow each step. Apply this to [Foundation and Higher] Use standard units of mass, length, time, money and other measures, including compound measures, with decimal quantities where appropriate..
- Standard units and compound measures exam tip 1: Write the method before the answer so the examiner can follow each step. Apply this to [Foundation and Higher] Use metric conversion factors for length, area, volume and capacity when required..
Common mistakes
- Standard units and compound measures common mistake 1: Show the method first, then give the final answer in the required form. Apply this directly to Standard units and compound measures.
- Standard units and compound measures common mistake 1: Show the method first, then give the final answer in the required form. Apply this directly to Standard units and compound measures.
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