Significant digits
This presentation is the property of its rightful owner.
Sponsored Links
1 / 8

Significant digits PowerPoint PPT Presentation


  • 60 Views
  • Uploaded on
  • Presentation posted in: General

Significant digits. 1.Non-zero digits are ALWAYS significant. Example- 123456789 2.Zeros that are between other significant digits are ALWAYS significant. Example - 3004  3.Final zeros that occur before or after the decimal are ALWAYS significant. Example - 78.00

Download Presentation

Significant digits

An Image/Link below is provided (as is) to download presentation

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 digits

Significant digits


Rules for significant digits

1.Non-zero digits are ALWAYS significant.

Example- 123456789

2.Zeros that are between other significant digits are ALWAYS significant.

Example- 3004 

3.Final zeros that occur before or after the decimal are ALWAYS significant.

Example- 78.00

4.Zeros used for spacing the decimal are NOT significant.

Example- 0.003

RULES FOR SIGNIFICANT DIGITS


Examples

EXAMPLES


How many significant digits

28040.00305

2.8430.24

0.00296.89

4.6 X 1040.001

75.006.0

50000123.056

360100.04

HOW MANY SIGNIFICANT DIGITS?


Adding subtracting

When you have numbers to add/subtract you will sometimes need your answer to have the correct number of significant digits. Here is the rule:

Look at all of the numbers to add/subtract and find the number with the LEAST number of sig. digs. AFTER the decimal. This is how many sig. digs. should be after the decimal in your answer.

Example -24.686

2.343

3.21

30.239

ANSWER = 30.24

ADDING & SUBTRACTING


Multiplying dividing

When you have numbers to multiply/divide you will sometimes need your answer to have the correct number of significant digits. Here is the rule:

Look at all of the numbers to multiply/divide and find the number with the LEAST number of sig. digs. This is how many sig. digs. that you should have in your answer.

Example - 3.22 x 2.1 = 6.762

ANSWER = 6.8

MULTIPLYING & DIVIDING


Example problems for

  • 1.2 + 1.26 =

    • 2.46

      • Final Answer: 2.5

  • 2.476-1.72 =

    • 0.756

      • Final Answer: 0.76

  • 10.72694321 – 10.1 =

    • 0.62694321

      • Final Answer: 0.6

EXAMPLE PROBLEMS FOR +/-


Example problems for x

  • 1.53 x 2.5

    • 3.825

      • Final Answer: 3.8

  • 10.0 / 5.0 =

    • 2

      • Final Answer: 2.0

  • 10.2 x 1000

    • 102,000

      • Final Answer: 10.2 x 10³

EXAMPLE PROBLEMS FOR X/÷


  • Login