1.   Identify the precision unit of the ruler below.
   
    A. in. B. in.
    C. 4 in. D. in.
    Hint

  2.   Identify the precision unit of the thermometer below.
   
    A. 0.5°F B. 10°F
    C. 1°F D. 5°F
    Hint

  3.   Identify the precision unit of the clock below.
   
    A. 1 h B. 1 min
    C. 3 h D. 30 min
    Hint

  4.   Identify the length of the pencil using significant digits.
   
    A. 18 cm B. 18.2 cm
    C. 18.05 cm D. 18.15 cm
    Hint

  5.   Identify the weight shown on the scale using significant digits.
   
    A. 8.7 kg B. 8 kg
    C. 8.65 kg D. 8.6 kg
    Hint



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