Write Lower Bound and Upper Bound of Measurements

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Complete the following table
# Measurements Lower bound Upper bound
1 Mass of a person is 72 kg to the nearest kg
2 Length of the straw is 12.4 cm to the nearest mm
3 The length of the racetrack is 400 m to the nearest 10 m
4 Speed of the car is 62.7 km/h nearest to .5 km/h #GCSE #SAT #EQAO #IBSLmath
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Thank you Sir. Can I know why do we have to divide by 2 for the lower bound? And what do we mean by (to the nearest)?

jameyatesmauriat
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the answer for no 2 is not correct it says to the nearest mm you used cm sir

samuelemiliha