Mathematical Calculations
24
You do not need to enter parentheses to set the priority of your operations in
RPN. Key in numbers and operations inside the parentheses first, followed by
those outside of the parentheses. If a problem has more than one set of
parentheses, start by working with the operations and numbers in the innermost
parentheses and work out. For example, calculate: (3 + 4) x (5 + 6).
One way to calculate this problem is to key in the numbers and operations within
the parentheses first, followed by the operations outside of the parentheses. See
Table 2-2 below.
Table 2-2 Simple Arithmetic Calculations in RPN Mode
Keys Display Description
3I4+
Inputs the numbers and the
operation in the first set of
parentheses. Intermediate results
are displayed. Note the (+) and
(RPN) annunciators.
5I6+
Inputs the numbers and the
operation in the second set of
parentheses. Intermediate results
are displayed. Note the (+)
annunciator.
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