Concept explainers
Interpretation:
Whether it is better to round off after each step, or round off the final answer in the calculator display is to be stated.
Concept introduction:
The significant numbers are taken by counting the digits from left to right and starting by the first non-zero digit. The process of eliminating the non-significant digit is known as the rounding off. This rounding off follows three rules which are stated below as:
Rule 1: If the first non-significant digit is less than
Rule 2: If the first non-significant digit is equal to or greater than
Rule 3: In a multistep calculation the non-significant digits are taken in all the steps.
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EBK INTRODUCTORY CHEMISTRY
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