Evaluate powers of ten: The quantity 3.3 × 10^3 equals which of the following standard decimal forms?

Difficulty: Easy

Correct Answer: 3,300

Explanation:


Introduction / Context:
Scientific notation expresses numbers compactly as a coefficient times a power of ten. Converting back and forth prevents place-value mistakes when entering data into calculators or spreadsheets.


Given Data / Assumptions:

  • Given: 3.3 × 10^3.
  • 10^3 means shift the decimal three places to the right.
  • Goal: choose the correct decimal representation.


Concept / Approach:
Multiply the coefficient 3.3 by 1000. Moving the decimal right expands the value by three orders of magnitude, preserving significant digits (here, two significant figures: 3.3).


Step-by-Step Solution:

Write 3.3 × 1000.Compute: 3.3 × 1000 = 3300.Format with thousands separator → 3,300.


Verification / Alternative check:
Place-value shift: 3.3 → 33.0 (10^1) → 330.0 (10^2) → 3300.0 (10^3). The result is 3,300 exactly.


Why Other Options Are Wrong:

  • 330: Corresponds to 3.3 × 10^2, not 10^3.
  • 33,000: Would be 3.3 × 10^4.
  • 0.0033: Would be 3.3 × 10^-3.


Common Pitfalls:

  • Shifting the decimal the wrong direction for positive exponents.
  • Dropping significant digits when expanding notation.


Final Answer:
3,300

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