HP HP-21 - Page 15

Getting Started 13
. . . and then solve for the final answer. Youdon’t need to press
to store the intermediate result—the HP-21 stores it
automatically when you key in the next number. To continue . .
Press Display
7 The intermediate result from the pre-
ceding operation is automatically
stored when you key in this number.
[x] 105.00 Pressing the function key gives you
the final answer.
Now try these problems. Notice that you only have to press
EXE to insert the first pair of numbers into the calculator—
each subsequent operation is performed using a new number
and an automatically stored intermediate result.
To solve: Press:
2+ 3 2
10 [ENTER 4|
o«
(16 — 4) x 3
N
ST
E“E“I
36.00
14+7+3-2 1
7
»
Bpmwlw.\l