Question

Multiplying with Scientific Notation

The sanitation department calculated that last year each city resident produced approximately 1.643 × 103 pounds of garbage. There are 2.61 × 105 people living in the city. How much garbage did the city sanitation department collect last year?

4.2882 pounds

428.820 pounds

428,820 pounds

428,820,000 pounds

Answer 1

(1.643 × 10^3) × (2.61 × 10^5) = (1.643 × 2.61) × 10^(3+5)
= 4.28823 × 10^8 ≈ 428,820,000 pounds

Answer: 428,820,000 pounds.