To express $2.3 \times 10^8$ in decimal notation, you simply move the decimal point 8 places to the right.

Starting with 2.3: $2.3 \times 10^8 = 230,000,000$

So, $2.3 \times 10^8$ in decimal notation is 230,000,000.

Would you like more details or have any questions?

Here are 5 related questions:

1. How would you express $5.67 \times 10^5$ in decimal notation?
2. What is $3.14 \times 10^{-3}$ in decimal notation?
3. How does scientific notation help when dealing with very large or small numbers?
4. What is $1.45 \times 10^9$ in decimal form?
5. How can you express $7.89 \times 10^{-4}$ in decimal form?

Tip: In scientific notation, a positive exponent means moving the decimal point to the right, while a negative exponent means moving it to the left.