# Measured Numbers and Significant Figures

 What is a significant figure? If there is no 0 or a zero at the end of a decimal number When is a number not significant? if a zero is at the beginning of a decimal or without a decimal point If the length is reported as 2.76cm, is this number significant or not significant? All 3 digits are significant including the estimated digit (6). -|8 . . . . | . . . . |9 . . . . | . . . . |10 . . __________________________ ********** ########### What is the length of the star line? 1) 9.0 cm 2) 9.04 cm 3) 9.05 cm Answer: 9.04 cm or 9.05 cm- Estimated digit may be slightly different. Both readings are acceptable How do you read a meterstick? -|2 . . . . | . . . . |3 . . . . | . . . . ______________________ ******* The first digit is 2plus the second digit 2.7The last digit is obtained by estimation (could be 2.75 cm or 2.76 cm) AuthorMon ID66656 Card SetMeasured Numbers and Significant Figures DescriptionChemistry Measured Numbers & Significant Figures Updated2011-02-16T06:43:53Z Show Answers