The sum of the numbers 436.32, 227.2 and 0.301 in appropriate significant figures is
663.821
664
663.8
663.82
Since the least precise measurement 227.2 is correct to only one decimal place.
Therefore, the final result should be rounded of to 663.8. The arithmetic addition of given numbers is 663.8.
Round off the value 2.845 to three significant figures.
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