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Sig Fig / SI / Units Practice Name: __________________________ 1) Determine the number of significant figures in each measurement. a) 0.05730 m b) 143 g c) 0.00073 m d) 8.750 x 10-2 g 2) Round each measurement to three significant figures. a) 0.01552 m ____________________________ b) 9009 m _______________________________ c) 1.7777 x 10-3 m ________________________ d) 629.55 m _____________________________ e) 9459 m_______________________________ 4) Complete the table. Operation Rule (Add/Subt/Mult /Div) (Fewest Decimal Places / Fewest Sig Figs) Unrounded Answer Rounded Answer 9.44 m – 2.1 m 8432 m / 12.5 m 2.58 x 10-3 s x 6.1 x 10-5 s 5) Calculate the volume of a warehouse that has inside dimensions of 22.4 m by 11.3 m by 5.2 m. (Volume = l x w x h) Use the correct significant digits in your answer and show all work. How many significant figures are in these numbers? 1) 1234 _____ 6) 1090.0010 _____ 2) 0.023 _____ 7) 0.00120 _____ 3) 890 _____ 8) 3.4 x 104 _____ 4) 91010 _____ 9) 9.0 x 10-3 _____ 5) 9010.0 _____ 10) 9.010 x 10-2 _____ Perform the following calculations and round according to the appropriate rule. Calculator Answer 11) 4.60 + 3 12) 0.008 + 0.05 13) 200 – 87.3 14) 67.5 – 0.009 15) 13.7 x 2.5 16) 200 x 3.58 17) 5000 / 55 18) 5003 / 3.781 Rounded Answer