A person measures three masses as 435.42 g, 226.3 g and 0.125 g. According to the rules of significant figures, their sum should be reported as:
Options

Question

A person measures three masses as 435.42 g, 226.3 g and 0.125 g. According to the rules of significant figures, their sum should be reported as:

G1 Physics · Accepted Answer

First add the measured values: 435.42 + 226.3 + 0.125 = 661.845 g. For addition or subtraction, the final result is rounded to the least number of decimal places present in the given data. The least precise value is 226.3 g, which has one decimal place. Therefore, 661.845 g → 661.8 g. Correct option: C.