Science Help Online Worksheet 2-5l Calculating with Scientific Notation
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Hit the print command and show all work in the spaces provided.   Leave your answers in proper scientific notation, and round your answers to the correct number of significant digits.

Rule for Addition and Subtraction - when adding or subtracting in scientific notation, you must express the numbers as the same power of 10.  This will often involve changing the decimal place of the coefficient.

1) (3.95 x 105) + (7.8 x 103) 2) (2 x 10-3) + (8 x 10-4)
3) (6.423 x 101) + (5.001 x 10-1)    4) (4.54 x 107) - (1.01 x 108)  
5) (7.83 x 10-2) - (2.20 x 10-3)

 

 

 

 6) (8.23 x 104) - (3.02 x 105)
  Answers     1) 4.028 x 105           2) -2.8 x 13           3) 6.47301 x 101           4) -5.56 x 107          5) -7.61 x 102           6) 2.20 x 10-5

Please forward all questions, comments and criticisms to Gregory L. Curran.
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Last Modified May 22, 2004