Exam-style question
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Two lengths are recorded as 12 cm and 7 cm, each correct to the nearest centimetre. Calculate the lower bound and the upper limiting value for their total length. [4 marks].
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Maths method check
- Topic focus: Measures and accuracy.
- Question style: exam_style.
- Reasoning demand: application.
- Check the operation, notation, units, and final answer form against the question before moving on.
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