SPECIAL ROUNDING PROCEDURES. In the preceding frames, you
used rules to round to the nearest place (nearest hundredth, nearest
whole number, etc.). The basic theory is that sometimes you round up
No problem was given in
and sometimes you round down, but in the end it balances out.
Some organizations, however, may use different rules. For example,
suppose you are rounding off the weights of individual products to the
nearest pound, then adding the weights together to determine the total
weight of the shipment. One organization may not care if the estimated
weight is more than the actual total weight, but will be very upset if the
estimate is below the actual weight. In such a case, you may be told to
round up at all times to prevent an underestimate. Likewise, you may be
told to always round down by an organization that must make sure that
the actual weight is not under your estimate.
Some other organizations may use modified rules of rounding. Refer
back to Frame 3-23. Suppose that the amount you wished to round to
the nearest cent (
.01) had been exactly in the middle (0.50).
According to our rules of rounding, you would always round half-cents up
to the next penny. But suppose you knew that you would have a lot of
halfs (say a lot of half pounds in the above example). You might want a
system to round the halfs up sometimes and round them down
sometimes. One such rule is the "engineer's rule of rounding." When
using this modified rule of rounding, if the digit(s) to the right of the digit
to be rounded is "5" or "50", you round down if the digit to be rounded is
even (0, 2, 4, 6, or 8) and round up if the digit is odd (1, 3, 5, 7, or 9).
For example, 2 1/2 (2.5) pounds rounded to the nearest pound would
round to 2 pounds (the 2 is even). 3 1/2 (3.5) pounds, however, would
round to 4 pounds (the 3 is odd).
If you used the engineer's rule of rounding given above to round
to the nearest penny, the results would be (chose one --
NOTE: The information presented in this frame was for your information.
In this subcourse, you will only be tested on the rounding rules given in
Frame 3-25 and not on any system of rounding presented in this frame.
NOTE: Do not use any of the rules of rounding presented in this frame
unless specifically told to do so.