A person measures mass of 3 different particles as 435.42 g, 226.3 g and 0.125 g. According to the rules for arithmetic operations with significant figures, the addition of the masses of 3 particles will be.
- 661.845 g
- 661.84 g
- 662 g
- 661.8 g
Answer
(4) 661.8 g
Solution
Sum = 435.42 + 226.3 + 0.125 = 661.845 g
The least number of decimal places among the data is one (226.3 g).
the result is rounded off to one decimal place: 661.8 g
Answer: (4)