16 Section 1: Getting Started
Keystrokes Display
+
13.0000
(6 + 7).
Now perform (9 − 3). Since another pair of numbers must be keyed in, one
immediately after the other, use the v key again to separate the first
number (9) from the second (3). (There is no need to press v to separate
the 9 from the previous intermediate result of 13 that is already in the
calculator—the results of previous calculations are stored automatically.) To
solve (9 − 3):
Keystrokes Display
9
9.
v
9.0000
3
3.
-
6.0000
(9 − 3).
Then multiply the intermediate results (13 and 6) together for the final answer.
Keystrokes Display
*
78.0000
(6 + 7) × (9 − 3) = 78.
Notice that the HP-10C automatically stored the intermediate results for you
and used them on a last-in, first-out basis when it was time to multiply. No
matter how complicated a problem may look, it can always be reduced to a
series of one- and two-number operations.
Remember:
• The v key is used for separating the second number from the first
in any operation requiring the sequential entry of two numbers.
• Any new digits keyed in following a calculation are automatically treated
as a new number.
• Intermediate results are stored on a last-in, first-out basis.
Now try these problems. Work through them as you would with pencil and
paper. Don't be concerned about intermediate answers—they are handled
automatically by your HP-10C.
(16 × 38) − (13 × 11) = 465.0000
(27 + 63) ÷ (33 × 9) = 0.3030
0.55) (16.38×
÷ 0.05 = 60.0300
4 × (17 − 12) ÷ (10 − 5) = 4.0000
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