The significant figure rules for logs and antilogs is a little different. How well do you know the rules for Logarithms? Significant figure rules for logs and antilogs Significant figure rules for addition and subtractionįor values calculated by addition or subtraction, the answer should contain the same number of decimal places as the least precise value used in the calculation. Significant figure rules for multiplication and divisionįor values calculated by multiplication or division, the number of significant figures given in the answer is based on the number of significant figures of the least precise value used in the calculation. Any zeros following this digit are considered trailing zeros and are not significant. If the value does not have a decimal point, all digits to the right of the first significant figure to the last non-zero digit are significant. If the value has a decimal point, all digits to the right of the first significant figure (zero and non-zero) are significant.Reading the value from left to right, the first non-zero digit is the first significant figure.

The number of significant figures of a value can be determined by the following rules:

Additional tips for applying significant figure rules in your calculations.Significant figure rules for logs and antilogs.Significant figure rules for addition and subtraction.Significant figure rules for multiplication and division.In this article, we will look at the rules behind significant figures and when to apply them. Significant figures are a central concept to reporting values in science, but one that is commonly misunderstood.

Sig fig rules