CHAPTER 4. PERFORMING CALCULATIONS
Example:
To divide 6 by 7, type
With the division, notice it told you that 6 divided by 7 is 6/7. This is because the calculator will
give you the exact value if you do not use any decimals in what you type in to the calculation. If
you had entered something with a decimal point, the calculator would give you an approximate
value. A later section will explain how to obtain an approximation if you need it.
4.3 x vs ×
Find and buttons on your calculator.
is between and . This is the button for the letter or variable x.
is in the right column with the , , and buttons. This is the button for multipli-
cation.
4.4 Negative Numbers vs. Subtraction
The calculator has one key for subtraction, , and a different key for negative numbers, .
These two buttons are not interchangeable. If you use the wrong button, the calculator will either
give you an error message or will perform a different calculation than what you had intended to
calculate.
Example:
To calculate −2 − 3, you would type .
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