How do you write 450,000,000 in scientific notation?

To write 450,000,000 in scientific notation, follow these steps:

Identify the significant digits: The number 450,000,000 has two significant digits: 4 and 5. The rest are zeros.

Place the decimal point: Move the decimal point in the number so that there is only one non-zero digit to the left of it. In this case, move the decimal point 8 places to the left. This gives 4.5.

Determine the exponent: The number of places you moved the decimal point becomes the exponent of 10. Since you moved it 8 places to the left, the exponent is +8.

Write in scientific notation: Combine the significant digits (4.5) with the power of 10. The result is: 4.5 × 10⁸

Final Answer: 450,000,000 in scientific notation is 4.5 × 10⁸.