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Sig. Fig.’s in Calculations!

Sig. Fig.’s in Calculations!. Now that we know what a sig. digit is…. How do we use it in calculations?????. Addition/subtraction and multiplication/division. Full answers…But are these significant? 2.5cm + 2.25cm= 4.75cm 4cm x 8.332cm = 33.328cm 2. Addition/ subtraction:.

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Sig. Fig.’s in Calculations!

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  1. Sig. Fig.’s in Calculations!

  2. Now that we know what a sig. digit is…. How do we use it in calculations?????

  3. Addition/subtraction and multiplication/division Full answers…But are these significant? 2.5cm + 2.25cm= 4.75cm 4cm x 8.332cm = 33.328cm2

  4. Addition/ subtraction: The number of significant digits can be determined by the largest uncertainty. What does this mean??

  5. Multiplication/Division: The number with the smallest amount (number) of significant figures determines the amount of significant figures in the answer of the calculation.

  6. Addition/Subtraction 2.5 2. 2 5 4.7 5 cm + cm cm 4.8 cm

  7. Multiplication/Division 4 cm x 8.332 cm 1 4 = 33.328 cm2 5 =30 cm2 1 What is the smallest number??

  8. 2.3 cm X 12 cm= • 4528 g X 15 g = • 13.258 ml + 254 ml = • 14.5 cm – 4 cm = • 5) 25 ml / 5 ml =

  9. Lets try with calculating: AreaPerimeterVolume Area: Length x width = Perimeter: length + length + width + width = Volume: Length x Width x height =

  10. You try these: Remember Units!!!!!! Perimeter & Area 15.2cm 17.882 cm 28.665 cm Find: Volume, Perimeter, Area

  11. Answers Volume:7791.330456 cm3 Remember Sig. Fig’s!! = 7.80 x103 cm3 Perimeter: 87.73 cm Remember Sig. Fig’s!! = 87.7 cm Area: 435.708 cm2 Remember Sig. Fig’s!! = 4.36 x102 cm2

  12. On your own

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