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1.3 Sig. Digs.

Identifying Sig. Digs and Rules in Calculated Measurements

QuestionAnswer
All non zeros digits are... (significant OR not significant) Significant
Zeros between two other significant digits are... (significant OR not significant) Significant
Zeros at the end of a number to the right of a decimal point are... (significant OR not significant) Significant
Zeros to the left of the first nonzero digit in a decimal are... (significant OR not significant) Not significant
Zeros at the end of a number without a decimal point are assumed to be... (significant OR not significant) Not significant
Sum or difference rule Round to the LAST significant digit of the LEAST precise measurement.
Product or quotient Must have no more significant digits than the LEAST precise measurement.
Precision Determined by the SMALLEST unit or FRACTION of a unit that can be reasonably measured.
Accuracy The closeness of a given measurement or value to the actual measurement or value.
How do you determine accuracy? Find the absolute value of the difference of the two measurements.
How many significant digits are in the number 1,234? 4
How many significant digits are in the number 0.023? 2
How many significant digits are in the number 890? 2
How many significant digits are in the number 1090.0010? 8
How many significant digits are in the number 0.0001 1
Created by: LisaDailey
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