HP 25 Owner's Handbook Manual page 24

Programmable scientific calculator
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20
Getting Started
Now try these problems
.
Notice th
a
t for each problem you only
have to press
mImm
to insert
a
pair of numbers into the
calcu-
lator-each
s
ubsequent
operation
is performed using
a
new
number and
a
n
a
utom
a
tically stored
intermedia
te result.
To solve
(2
+
3)
10
3 (16
-
4)
14
+
7
+
3
-
2
4
Press
2
mImm
3
El
10
El
16
mImm
4
El
3
o
14
mImm
7
[±]
3
El
2
El
4
El
Display
I
0.50
1
36.00
15.50
Probl
e
ms that
are
even
mo
re
complicated can
be
solved
in
th
e
same
simpl
e ma
nner
,
using
the automatic
storage
of
intermedi-
ate results
.
For
exa
mpl
e,
to
solve
(2
+
3)
x
(4
+
5) with
a
pencil
and paper
,
you
would:

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