Question

According to the rules of significant figures, 4.57 + 6.3 = 10.9. This is because the least precise value in the problem is 6.3, which is precise only to the tenths digit, so the answer must also be rounded to the nearest tenth.
A. True
B. False

Answer 1

This is true. Because we don’t have more precision our of 6.3, we cannot append more digits with any certainty. We must omit the digit in the hundredths place in order to have a solutionwith correct precision using significant figures.