Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 23)
The width of a book is measured as 27 cm to the nearest cm. What are the upper and lower bounds of the width?
26 cm and 28 cm
26.5 cm and 27.5 cm
27 cm
27.5 cm and 28.5 cm
Explanation
Since the measurement is to the nearest cm, the bounds are 27 +/- 0.5.