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Significant Figures

Reference > Science
An explanation of what significant figures are, and reasons for using them
Determining which digits are significant in a measured number
How to perform addition and subtraction on values and properly determine significant figures
Using values that are not measured - mathematical constants, numbers in formulas, and counted values
Using multiplication and division of measured and non-measured quantities, using significant figures
Significatnt Figures word problems involving multiple steps with arithmetic operations
'Round Up' vs 'Half to Even' rounding rule - how to round a digit of five

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