Significant Digits:
Chapter Significant digits presents the concept of significant digits and the application of significant digits in a calculation.
DETERMINE the number of important digits in a given number.
Given a formula CALCULATES the answer with the appropriate number of significant digits.
Calculator Usage, Special Keys
Most calculators could be set up to display a fixed number of decimal places. Within doing so, the calculator continues to perform all of its internal calculations using its maximum number of places, but rounds the displayed number to the particular number of places.
INV key
To fix the decimal place press the INV key and the number of the decimal places desired. For instance, to display 2 decimal places, enter INV 2.