31
Chapter 3: Manual Calculations
+
Enters an addition sign.
Example
• Calculate 12
+
34.
#
C
1 2
+
3 4
E
-
Enters a subtraction sign.
Example
• Subtract 21 from 43.
4 3
-
2 1
E
|
Enters a multiplication sign.
Example
• Multiply 12 by 34.
1 2
|
3 4
E
=
Enters a division sign.
Example
• Divide 54 by 32.
5 4
=
3 2
E
The multiplication sign can be left out when:
a. Placed in front of an open parenthe-
sis.
b. Followed by a variable or a math-
ematical constant (
π
, e, etc.):
c. Followed by a scientific function,
such as sin, log, etc.:
When to leave
out the “
×
” sign
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