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Chapter 3: Basic Calculations — Basic Keyboard
| Enters a “×” sign for multiplication.
Example
• Multiply 12 by 34.
1 2 | 3 4 E
= Enters a “÷” sign for division.
Example
• Divide 54 by 32.
5 4 = 3 2 E
The multiplication sign can be left out when:
a. It is placed in front of an
open parenthesis.
b. It is followed by a variable or
a mathematical constant (π,
e, etc.):
c. It is followed by a scientific
function, such as sin, log,
etc.:
_ Sets a negative value.
Example
• Calculate
-12 × 4.
_ 1 2 | 4 E
Note: Do not use the - key to enter a negative value; use the
_ key instead.
When to leave
out the “×” sign
Entering a number
with a negative value