Section 2.2 Scientific Notation and Dimensional Analysis

Practice Test
      
  1.Which of the following numbers is equal to 2.70 x 10-4?  
  a.   0.00027  
  b.   0.675  
  c.   27 x 10-3  
  d.   270  
  Hint    
      
  2.How many milliliters are there in 1.0 microliter?  
  a.   1.0 x 10-1 mL  
  b.   1.0 x 10-2 mL  
  c.   1.0 x 10-3 mL  
  d.   1.0 x 10-4 mL  
  Hint    
      
  3.What is the area in square millimeters of a rectangle that is 7.431 cm long and 23.33 mm wide?  
  a.   1734 mm2  
  b.   173.4 mm2  
  c.   17.34 mm2  
  d.   1.734 mm2  
  Hint    
      
  4.Dimensional analysis is a method of problem-solving that focuses on ________ .  
  a.   units  
  b.   error  
  c.   accuracy  
  d.   precision  
  Hint    

 
   
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