Question

The sum of the numbers $436.32$, $227.244$ and $0.301$ in appropriate significant figures is:

• A. $663.821$
• B. $664$
• C. $663.8$
• D. $663.82$

Answer 1

Answer: (C)

$663.8$

$\begin{array}{c}\text{According to the rule of addition more decimal places}\\ \text{will be preferred in case of addition.}\end{array}$

$\begin{array}{c}=436.32+227.244+0.301\\ =663.865\end{array}$

$\therefore \text{the most appropriate number out of all the options is option C i.e. 663.8}$