1. Sid Sloppy was not careful in his measurements. He measured the volume of a 12 oz. bottle to be 14 oz.
(14-12)/ 12 x 100= 17%
2. Gilbert Goofoff was told to use the balance to find the mass of a 500 g piece of metal. He goofed off for most of the lab period and then tried to finish his experiment quickly at the end. Since he was in such a rush he reported the weight of the metal as 458 g.
(458-500)/500 x 100 = 8%
3. Franny failure was told to measure a length of copper wire 50 cm long to use for her experiment. She mistakenly measured 45 cm of wire instead, which lead to poor results in her experiment.
(45 – 50)/50 x 100 = 10%