Essential Mathematics Final Practice Exam Worksheet - Grade 12 Page 20
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506. Thomas measures the diameter of a toonie (a $2 coin). The diameter of the coin is
2.815 cm. (3 marks) (Module 8, Lesson 2)
a) State the precision of the measuring device used.
b) State the uncertainty of the measurement.
c) State the measurement Thomas should report (including the uncertainty).
7. The accepted weight of a small gold bar is 35.58 grams. Sam weighed the gold and his
reading was 35.62±0.05 grams. Is Sam’s reading accurate? Explain. (2 marks)
(Module 8, Lesson 2)
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G r a d e 1 2 E s s e n t i a l M a t h e m a t i c s
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