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When rounding the number 0.6789 to three significant figures, what is the result

Practice Questions

Q1
When rounding the number 0.6789 to three significant figures, what is the result?
  1. 0.678
  2. 0.679
  3. 0.68
  4. 0.67

Questions & Step-by-Step Solutions

When rounding the number 0.6789 to three significant figures, what is the result?
  • Step 1: Identify the first three significant figures in the number 0.6789. The significant figures are 6, 7, and 8.
  • Step 2: Look at the digit immediately after the third significant figure (which is 8). This digit is 9.
  • Step 3: Since the digit after the third significant figure (9) is 5 or greater, we round up the last significant figure (8) by 1.
  • Step 4: Therefore, 0.6789 rounded to three significant figures becomes 0.679.
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