•For multiplication and division
•the results are reported to the least number of significant figures
•
•    354.760  X 0.0004567 = 0.162018892
•     =  0.1620
•For addition and subtraction
•The results are reported to the least number of  decimal places
l    345.672 – 34.56720 = 311.1048
l                                     = 311.105
Significant figures in computation