Significant Figures, Rounding, and Arithmetic Review

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					SCH3U                                                     Name:_______________
        Significant Figures, Rounding, and Arithmetic Review

1) Define:    a) Accuracy



              b) Precision



2) How many significant digits are represented by the following measurements?
      a) 307.0 cm               b) 61 m/s                 c) 0.003 g/L



        d) 3.00 x 102 m/s       e) 6 people per car       f) 3600 s per minute



        g) 400 m                h) 325.000 mm             i) 211.214 kg




3) Round off the following numbers to the indicated number of significant digits.
      a) 34.35 to 2 digits     b) 69.9995 to 4 digits   c) 13.49 to 2 digits




4) Give the answer of the following to the correct number of significant digits.
       a) 300 x 2.02            c) 0.03 + 0.1009         c) 0.1 + 142.23




5) Solve the following equation for time (t)

        v = 0.5at - 20




6) Convert 100 km/h into a value in m/s.