(a) Express 5.0198,15.898,9.975 and 2.013 correct to 2 significant figures
(b) Hence estimate the value of 5.0198 x 3.987229615 (divide) 9.975 x 2.013
There are three rules on determining how many significant figures are in a number:
Non-zero digits are always significant.
Any zeros between two significant digits are significant.
A final zero or trailing zeros in the decimal portion ONLY are significant.
a) 5.0 15 9.9 2.0
b) .9967 Only has number of significant digits as the number with the lowest number of sig digits