Question -
Answer -
Mass of grocer’s box = 2.300 kg
Mass of gold piece I =20.15g = 0.02015 kg
Mass of gold piece II =20.17 g = 0.02017 kg
(a) Total mass of the box = 2.3 + 0.02015 + 0.02017 = 2.34032 kg
In addition, the final result should retain as many decimal placesas there are in the number with the least decimal places. Hence, the total massof the box is 2.3 kg.
(b) Difference in masses = 20.17 – 20.15 = 0.02 g
In subtraction, the final result should retain as many decimalplaces as there are in the number with the least decimal places.