Scientific Notation
•N
When written correctly
n ,
N    is a number
                                 an integer (i.e. whole number)  or a mixed decimal
                                                   with a value between 1 and 10
     is a positive or negative  integer
        the exponent,
there must one
 non zero digit
       and only one non zero
       digit
 
                  to the left of the decimal  point in
     the number N.
•All numbers may be expressed in the form  
•x
•10
•n