Mathematics for IGCSE & O level - Limits Of Accuracy (Section 2 - No. 21)
A piece of paper 21.0 cm long is taped onto the end of another piece 29.7 cm long. Both measurements are given to the nearest millimetre. What is the lower bound of the total length?
50.60 cm
50.65 cm
50.70 cm
50.80 cm
Explanation
Lower bound: 21.05 + 29.65 = 50.7 cm, the lower bound is 50.65.
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