Round off the final answer to the correct number of

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: For calculations involving more than one step, carry out the calculations without rounding off the intermediate results. Round off the final answer to the correct number of significant figures. Addition and Subtraction. In addition and subtraction, the number of significant figures in the answer depends on the original number in the calculation that has the fewest digits to the right of the decimal point . For example, when adding: 102.226 2.51 7 36. 840.736 ← fewest digits to the right of the decimal point nonsignificant digits ← rounded off 841 and when subtracting: 102.25 –99.3 ← fewest digits to the right 2.95 of the decimal point nonsignificant digit 3.0 Back Forward ← rounded off Main Menu TOC Study Guide TOC Textbook Website MHHE Website Chemistry: The Study of Change / 1 1 It is important to remember when adding or subtracting, that the number of significant figures in the answer is not necessarily determined by the quantity having the fewest significant figures, which is true f...
View Full Document

This note was uploaded on 09/15/2009 for the course CHEM 102 taught by Professor Bastos during the Spring '08 term at Adelphi.

Ask a homework question - tutors are online