Mathematics Question on Sum of First n Terms of an AP

Question

The sum of the numbers $436.32$ , $227.2$ and $0.301$ in appropriate significant figures is

Answer 1

Solution

The arithmetic addition of given numbers is $436.32$ $+ 227.2$ $0.301$ $663.821$ Since the least precise measurement $227.2$ is correct to only one decimal place. Therefore, the final result should be rounded off to $663.8$ .