Question

What will be the answer in appropriate significant figures as a result of addition of 3.0223 and 5.041?

• A. 80.633
• B. 8.0633
• C. 8.063
• D. 806.33

Answer 1

Answer: (C)

On addition: $3.0223+5.041=8.0633$

Rule: The result of an addition or subtraction is reported to the same number of decimal places as present in number with the least decimal places.

Since the least precise number is $5.041$ and that has three digits after the decimal, therefore the result of the above addition is rounded off to three decimal figures as $8.063$

Hence, option C is correct