
Interpretation:
The given masuement is to be rounded off to three significant digits.
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 1st non-significant digit is less than
Rule 2: If the 1st 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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Chapter PSS Solutions
EBK INTRODUCTORY CHEMISTRY
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