Practice Rules For Significant Figures In Calculations (11.2.3) - Chapter 11: Measurement and Data Processing

Practice: Rules for Significant Figures in Calculations

Lesson 11.2.3Measurement and Data Processing

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10 questions

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6 sample questions

Question 1.
Find the number of significant figures in 0.00650.
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Count only the non-zero digits and sandwich zeros.
Question 2.
Round 7.891 to two significant figures.
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Look at the digit after the second figure.
3Question 3.
What are significant figures?
- Digits contributing to measurement precision
- Only whole numbers
- All numbers regardless of value
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Think about what contributes to precision in a measurement.
4Question 4.
When multiplying numbers, how do you determine the number of significant figures in the answer?
- Based on decimal places
- Based on the largest number
- Based on the measurement with the fewest significant figures
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Focus on the rules of multiplication.
Question 5.
A chemist measures two solutions: 2.55 mL and 1.5 mL. What is the total volume rounded to the correct significant figures?
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Consider the significant figures of each measurement.
Question 6.
If you multiply 4.00 m by 3.6 m and then subtract 2.0 m², what is your final area rounded appropriately?
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Calculate then round according to the significant figures.

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