Question

How do you determine how many significant figures to report in an addition or subtraction

problem?

Answer 1

For addition and subtraction use the following rules:

1. Count the number of significant figures in the decimal portion ONLY of each number in the problem

2. Add or subtract in the normal fashion

3. Your final answer may have no more significant figures to the right of the decimal than the LEAST number of significant figures in any number in the problem.

Step-by-step explanation: