Question

Finding a Product

What is the product of 8.2 × 109 and 4.5 × 10-5 in scientific notation?

36.9 × 10-45

12.7 × 104

3.69 × 105

3.69 × 1014

Answer 1

Compute (8.2 × 10^9)(4.5 × 10^-5) = (8.2·4.5) × 10^(9−5) = 36.9 × 10^4 = 3.69 × 10^5.

Answer: 3.69 × 10^5.