A person measures mass of 3 different particles as $435.42 \mathrm{~g}, 226.3 \mathrm{~g}$ and 0.125 g.…
A person measures mass of 3 different particles as $435.42 \mathrm{~g}, 226.3 \mathrm{~g}$ and 0.125 g. According to the rules for arithmetic operations with significant figures, the additions of the masses of 3 particles will be.
661.845 g
662 g
661.8 g
661.84 g
Solution
$\mathrm{m}_1+\mathrm{m}_2+\mathrm{m}_3=435.42+226.3+0.125$ According to least significant digits $\mathrm{m}=661.8 \mathrm{~g}$