Rules for addition and subtraction
From Chemistry Resource
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 with?
Answer: It is easiest if you look write out the addition problem by aligning the decimal point.
The answer is 3.19 L; 3 significant figures.
Content suitability
BCIT courses: CHEM 0011
