Significant Figures

• What is the purpose of rounding numbers to significant figures?

  To enhance clarity in long numbers
• How is the number 432,765 rounded to 2 significant figures?

  It becomes 430,000
• If you have the number 0.002047, how would you express it in 1 significant figure?

  0.002
• How would you round 0.002047 to 2 significant figures?

  0.0020
• What is the 3 significant figure representation of 0.002047?

  0.00205
• How is the number 305,620 rounded to 1 significant figure?

  It becomes 300,000
• What is the 2 significant figure rounding of 305,620?

  310,000
• How is 305,620 rounded to 3 significant figures?

  It becomes 306,000
• What is the role of zeros in significant figures?

  • Zeros can be placeholders.
  • Zeros can count as significant figures.
  • Context determines their significance.