| I. Significant Figures |
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| Rule 1: To
determine the number of significant
figures in a |
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| measurement, read
the number from left to right and |
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| count all digits, starting
with the first non-zero digit. |
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| Rule
4: When a number is rounded off, the last digit
to be retained is |
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| increased by
one only if the following digit is 5 or more. |
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