Significant Figures

1 / 11

# Significant Figures - PowerPoint PPT Presentation

Significant Figures. Used to report all precisely known numbers + one estimated digit. Rule #1. Every nonzero digit is significant Examples: 24 = 2 3.56 = 3 7 = 1. Rule #2. Zeros between non-zeros are significant Examples: 7003 = 4 40.9 = 3 . Rule #3.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'Significant Figures' - aleta

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### Significant Figures

Used to report all precisely known numbers + one estimated digit

Rule #1
• Every nonzero digit is significant

Examples:

24 = 2

3.56 = 3

7 = 1

Rule #2
• Zeros between non-zeros are significant

Examples:

7003 = 4

40.9 = 3

Rule #3
• Zeros appearing in front of non-zero digits are not significant
• Act as placeholders
• Can’t be dropped, show magnitude

Examples:

0.00024 = 2

0.453 = 3

Rule #4
• Zeros at the end of a number and to the right of a decimal point are significant.

Examples:

43.00 = 4

1.010 = 4

1.50 = 3

Rule #5
• Zeros at the end of a number and to the left of a decimal point aren’t significant

Examples:

300 = 1

27,300 = 3

Special Rule
• Always remember PA

P

A

If a decimal point is present, start on the Pacific (P) side and begin counting at the first non-zero digit all the way to the end.

If a decimal is absent, start on the Atlantic (A) side and begin counting at the first non-zero digit all the way to the end.

Special Rule (cont.)
• Remember PA

Examples:

123.003 = decimal present, start on “P” side, begin counting

Special Rule (cont.)
• Remember PA

Examples:

204,000 = decimal absent, start on “A” side, begin counting at first non-zero digit until you hit the end of the number.

Sig. Fig. Math Rules
• Multiplication / Division:

Your answer can’t have more sig. figs. than the number in the problem with the least amt. of sig. figs.

Example = 60.56227892 x 35.25

Calculator says – 2134.890832 (wrong)