## Answers

4 sig fig (6) 10 = 1 sig. fig. 45.034 - (C) 2.60 X 1022 – 3 Sig. fig. 17.2010 - 6 sig.

Fig NOTE: After decimal point each digit (even zero) s Significant figure. Befor decimal for example 10, that zero is not significant because while writing in Scientific Notation , It would be uwutten as 1x10 This is significant figure (Answer is 1 sig. fig.). (3) Round off to two significant figure. 34:459 = 34 0.07918227 - 0.079 11.9x102) 700 2 = 70x107 6.854 x 186 = 6.09X10-6 0.729 = 0.73 Rules: f next digit after the last significant figure is greater thans, then add 1 to last significant figure.

Off mext digit after tast significant fegine is less than 5 then last significant figure remains the same. of five followed by non zero no, then add 1 two sig. fig.