Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Find the number of significant figures in 0.00650.
💡 Hint: Count only the non-zero digits and sandwich zeros.
Question 2
Easy
Round 7.891 to two significant figures.
💡 Hint: Look at the digit after the second figure.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What are significant figures?
- Digits contributing to measurement precision
- Only whole numbers
- All numbers regardless of value
💡 Hint: Think about what contributes to precision in a measurement.
Question 2
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
💡 Hint: Focus on the rules of multiplication.
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Challenge Problems
Push your limits with challenges.
Question 1
A chemist measures two solutions: 2.55 mL and 1.5 mL. What is the total volume rounded to the correct significant figures?
💡 Hint: Consider the significant figures of each measurement.
Question 2
If you multiply 4.00 m by 3.6 m and then subtract 2.0 m², what is your final area rounded appropriately?
💡 Hint: Calculate then round according to the significant figures.
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