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

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

Physical World, Units and Measurements

Solution:

The sum of the numbers can be calculated as $663.821$ arithmetically. The number with least decimal places is $227.2$ is correct to only one decimal place
The final result should, therefore be rounded off to one decimal place i.e., $664.$