Two-Number Functions - HP -11C Owner's Handbook Manual

22 Section 1: Getting Started
Two-Number Functions
A two-number function must have two numbers present in the
calculator before executing the function. (+], (-], [x], and [:] are
examples of two-number functions.
The Key. If one of the numbers you need for a two-number
function is already in the calculator as the result of a previous
function, you do not need to use the key. However, when you
must key in two numbers before performing a function, use the
key to separate the two numbers.
To place two numbers into the calculator and perform a two-
number function such as 2 + 3:
1. Keyin the first number.
2. Press [ENTER]to separate the first number from the second.
3. Keyin the second number.
4. Press the function key(s).
Keystrokes Display
2 2
2.0000
3 3
(] 0.6667
Order of Entry. As you know from basic arithmetic, reversing
the order of the numbers in addition and multiplication examples
will not affect the answer. But for subtraction or division, the
number you are subtracting or dividing by is always the second
number keyed in.
To perform Keystrokes Display
10—3 10 [ENTER)3 [5) 7.0000
3-10 3 [ENTER])10() -7.0000
10+ 3 10 (ENTER]3 (5] 3.3333
3+10 3 [ENTER]10[5) 0.3000