What is the product of (4 × 10^5) and (2 × 10^-3) in scientific notation?

A 6 × 10^2

B 8 × 10^2

C 8 × 10^8

D 6 × 10^-15

✓ Correct Answer: Option B

Multiply the coefficients (4 * 2 = 8) and add the exponents of 10 (5 + (-3) = 2). So, the product is 8 × 10^2.

💡 Why is B) the correct answer?

The correct answer to the question "What is the product of (4 × 10^5) and (2 × 10^-3) in scientific notation?" is Option B: 8 × 10^2.

The other options — A) 6 × 10^2, C) 8 × 10^8, D) 6 × 10^-15 — are incorrect for this GED Exam Prep question. As explained above: Multiply the coefficients (4 * 2 = 8) and add the exponents of 10 (5 + (-3) = 2). So, the product is 8 × 10^2.

📚 About This GED Exam Prep Practice Question

This 2-level GED Exam Prep question from the Mathematical Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GED Exam Prep practice test or use flashcards for spaced repetition review.

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What is the product of (4 × 10^5) and (2 × 10^-3) in scientific notation?

✓ Correct Answer: Option B

📚 About This GED Exam Prep Practice Question

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