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If a calculation requires that operations be done in an order inconsis-
tent with operator priority (for example, addition before multi-
plication), use parentheses. You can use a maximum of five pending
operations.*
Using Parentheses
Use parentheses to group operations and to specify the order in which
they are performed.t For example, you can calculate:
9 + 12
3
by placing parentheses around the addition so that it is done before
the division:
Keys:
Display:
Description:
9
12
21.0000
evaluates expression
inside parentheses.
53[5
7.0000
Calculate
—30 X V169 — 8:
85 — 12
30 (]
30.0000
85
85_
(=]
85.0000
prevents division of
30 by 85.
12
73.0000
evaluates expression
inside parentheses.
0.4110
Calculates 30 + 73.
* There are less than five pending operations available if you have more than four pending
left parentheses. For example, you can calculate 1 + 2 + 3 + 4 + (5 + 6.
T Closing parentheses at the end of the expression can be omitted. For example,
25 + (3 x (9 + 12 [=]is equivalent to 25 +~ (3 x (9 + 12)) (=].
24
2: Arithmetic and Storage Registers
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