SIGNIFICANT FIGURES & SCIENTIFIC NOTATION WS

Chem IH - Ch.3

  1. Determine which digits are significant by underlining them:

    2. A. 1000 m    B. 0.00030 g    C. 3030. L    D. 0.3000030 m     

    E. 3.0 x 10 3 cm      F. 4.56 x 108 mm

  2. Round each of the following to three significant digits.

    3. A. 22.25 m    B. 22.15 m    C. 22, 444 m    D. 0.005555 m

    E. 90,009 m    F. 1.77777 x 104 m

  3. Work problems and round the answers to the correct number of significant digits.

    4. A. 14.61 g + 238.0 g + 7.13 g =

    B. 64.516 g - 17.23 g =

    C. 7.2 m * 2.00 m =

    D. 2.400 L / 5.0 L =

    E. (0.0044g * 2.34 g) / 3.45 g =

    F. 15.60 m - 14.9 m =

  4. Write each of the following numbers in standard scientific notation.

    5. A. 34.8 x 108    B. 701,570    C. 0.003450    D. 0.00516 x 10-6

     

  5. Solve the following problems below and put each answer in standard scientific notation, along with the units of measurement.

    6. A. 2.0 x 104 m * 6.00 x 10-1 m =

    B. 2.0 x 104 m2 / 6.00 x 10-1 m =

    C. (3.450 x 108 m * 6.02 x 104 m) / 82.3 x 104 m =

    D. (5.5 x 10-5 g * 5.5 x 10-5 g ) / 6.7 x 10-7 g =

    E. 0.0045 x 105 L 2 / 0.00034 x 106 L =

    F. 6.02 x 1012 m * 5.66 x 1014 m =