Calculus Question

Question

Perform the indicated operation and give each result with the proper number of significant digits. 5.20 + 4.80 =

1. 10.00

2. 10.0

3. 10

4. 10.000

Answer 1

If this had been 5.204 + 4,80, then the answer would still have been 10.00 since 4,80 only has 2 digits beyond the decimal and that is the least number of decimals, so we chop off the 5.204 to match (making it 5.20)

This process ONLY is for adding and subtracting. For multiplication/division, the answer keeps the number of sig figs associated with the number having the lowest number of sig figs.