Arithmetic; The Calculator Line; Doing Calculations - HP 17bll+ User Manual

Arithmetic

If you prefer RPN to algebraic logic, please read appendix D before
you read this chapter. The "
example keystrokes are for ALG mode.

The Calculator Line

The calculator line is the part of the display where numbers appear and
calculations take place. Sometimes this line includes labels for results,
such as  . Even in this case you can use the number
v
for a calculation. For example, pressing
124.60 plus 2, and the calculator would display the answer, 126.60.
There is always a number in the calculator line, even though some-
times the calculator line is hidden by a message (such as 
 ). To see the number in the calculator line, press
which removes the message.
v

Doing Calculations

Simple calculating was introduced in chapter 1, page 21. Often longer
calculations involve more than one operation. These are called chain
calculations because several operations are "chained" together. To do
a chain calculation, you don't need to press
but only at the very end.
For instance, to calculate
750 12
* =/
or
750 12
* /
38 2: Arithmetic
v
×
750
360
360
=
360
=
" in the margin is a reminder that the
2
+
= after each operation,
12
you can type either:
2
would calculate
=
< ,