Mathematics for IGCSE & O level - Limits Of Accuracy (Section 2 - No. 15)
A mass is given as 57 kg to the nearest kilogram. Between which two values does this mass lie?
56 kg and 58 kg
56.5 kg and 57.5 kg
56 kg and 57 kg
57 kg and 58 kg
Explanation
Since the measurement is to the nearest kg, the lower bound is 57 - 0.5 = 56.5 kg and the upper bound is 57 + 0.5 = 57.5 kg. The mass lies between these two values.
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