1.7 - Calculations Involving Significant Figures
- Rules for Addition and Subtraction
The answer must retain the
same number of digits to the right of the decimal point as were present in the
value with the fewest number of digits to the right of the decimal point.
Question: If you
have 3.18 L of water and you add 0.01315 L more. How much water do you end up
Answer: It is easiest
if you look write out the addition problem by aligning the decimal point.
is 3.19 L; 3 significant figures.