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Chemistry LibreTexts

2.E: Measurement and Problem Solving (Exercises)

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  • Page ID
    97979
  • 2.3: Significant Figures: Writing Numbers to Reflect Precision

    1. Define significant figures. Why are they important?

    2. Define the different types of zeros found in a number and explain whether or not they are significant.

    3. How many significant figures are in each number?

      1. 140
      2. 0.009830
      3. 15,050
      4. 221,560,000
      5. 5.67 × 103
      6. 2.9600 × 10−5
    4. How many significant figures are in each number?

      1. 1.05
      2. 9,500
      3. 0.0004505
      4. 0.00045050
      5. 7.210 × 106
      6. 5.00 × 10−6
    5. Round each number to three significant figures.

      1. 34,705
      2. 34,750
      3. 34,570