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A significant figure is any digit within a number that is known for sure without approximation. In school, many teachs will tell you how many significant digits they want you to put
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Significant figures are numbers that will cause a huge change. This change can be for the better or the worse but indicates it will not go unnoticed.
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1. Determine if the number is a non-zero digit. All non-zero digits are considered significant. For example if you had the number 245,973 all six of these numbers would be considered
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1. Begin counting significant digits starting from the left. Any leading zeros that may be present are not significant and should not be included. For example, in the number 0050204.63
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