Significant Figures Exercises

How many significant figures are in the following values?

1)

8650 g            

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2)

0.0001000 g

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3)

9.27500 x 10-3 L

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4)

0.0900009 m

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5)

1850.0 K=

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6) What is accuracy?

7) What is precision?

8) How many decimals should you show when performing a measurement using a burette ?

9) how many uncertain digits are there in a measurement?

10) How many decimals should you show when  measuring length using a regular ruler with 10
divisions between each centimeter?

 

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HONORS AND IGCSE STUDENTS: DO NOT RESOLVE THE ONES BELOW

2) Solve the following problems using the correct number of significant figures in the answer:

 

a)

86 grams / 1.223 mL = 

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b)

0.12 grams + 12.998 grams =

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c)

91.3 grams – 0.96 grams =

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d)

450 mm + 13.83 mm =

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e)

23.4º C / 34 sec =

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5) Solve the following problem using the correct number of significant figures:

If one piece of a machine is measured by one engineer to be 150 mm long and the other piece of the machine is measured by another engineer to be 3.8 m long, what is the length of the assembled piece of machinery?

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© Analia Sanchez