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USER’S GUIDE — 21
You may want to practice getting a feel for your calculator keys by
reading through the key definitions and learning how to enter basic
Feet-Inch-Fractions and Metric, how to store values in Memory, etc.,
before proceeding to the examples.
You may also want to glance at various formulas listed in the
Appendix, so you understand what mathematical calculations your
calculator is programmed to perform, or common formulas you can
refer to on the job. Also review specific default settings or
Preference Settings, listed in the Appendix.
ORDER OF OPERATIONS
Unlike other Calculated Industries’ calculators, which use the
Chaining Method of Operations, this
calculator uses the Order of
Operations Method.
—
Chaining Method (“as entered”): 10 + 4 x 5 = 70
— Order of Operations Method: 10 + 4 x 5 = 30
The Order of Operations method of computing is based on the fol-
lowing order of preference:
1) Expressions inside of parentheses
2) Single-variable functions that perform the calculation and
display the result immediately (Trig functions, Square,
Square Root, Cube, Cube Root, Log, Percent, Reciprocal,
Angle Conversions)
3) Exponential function
4) Multiplication and Division
5) Addition and Subtraction
6) Equals (completes all operations)
If you need to calculate using the Chaining Method, you can change
this in your calculator Preference Settings. See page 107 for instruc-
tions.
GETTING STARTED
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