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TYPES OF NUMBERS
POWERS, ROOTS, EXPONENTS, and radicals

Engineering Aid 3 - Beginning Structural engineering guide book
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4. TO divide  a  fraction  by  a  fraction,  invert the  divisor  and  proceed  as  in  multiplication. 5.  The  method  of  CANCELING  can  be  used to advantage before multiplying fractions (using the  principle  of  rule  No.  1)  to  avoid  operations with larger numbers. A  decimal  fraction  is  a  fraction  whose denominator is 10 or some power of 10, such as 100,  1,000,  and  so  on.  For  example, are  decimal  fractions.  Accordingly,  they  could be  written  as  0.7,  0.23  and  0.087  respec- tively.   Decimal   fractions   have   certain   char- acteristics  that  make  them  easier  to  use  in computations  than  other  fractions.  Chapter  5 of   NAVEDTRA   10069-D1   deals   entirely   with decimal   fractions.   A   thorough   understanding of  decimals  will  be  useful  to  the  Engineering Aid   in   making   various   engineering   compu- tations.  Figure  1-1  shows  decimal  equivalents of  fractions  commonly  used  by  Builders, Steelworkers,  Utilitiesmen,  and  other  trades. Figure 1-1. Decimal equivalents. 1-3







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