Question

APPROXIMATING A LARGE NUMBER
A company earns $\$518,204,500$. Round the number. Write the result as a product of a single digit and a power of $10$.

Answer 1

$518,204,500=500,000,000$ (Rounding off the number to the closest $100,000,000$)

$500,000,000=5\times 100,000,000$ (Factor out $5$)

$5\times 100,000,000=5\times {10}^8$ (Writing $100,000,000$ as power of $10$)

Hence, the company earns approximately $\$5\times {10}^8$.