Let’s solve these problems step by step:

1. 9 × 10⁴
   $9 \cdot 10^4 = 9 \cdot 10,000 = 90,000$

2. 14 × 10³
   $14 \cdot 10^3 = 14 \cdot 1,000 = 14,000$

3. 23 × 10²
   $23 \cdot 10^2 = 23 \cdot 100 = 2,300$

4. 15 × 10⁵
   $15 \cdot 10^5 = 15 \cdot 100,000 = 1,500,000$

5. 7 × 10²
   $7 \cdot 10^2 = 7 \cdot 100 = 700$

6. 16 × 10¹
   $16 \cdot 10^1 = 16 \cdot 10 = 160$

7. 33 × 10³
   $33 \cdot 10^3 = 33 \cdot 1,000 = 33,000$

8. 11 × 10⁴
   $11 \cdot 10^4 = 11 \cdot 10,000 = 110,000$

Would you like me to explain further or solve similar examples?

Here are five related questions to expand your learning:

1. How can you convert a number like 123,000 into scientific notation?
2. What happens if you multiply numbers with the same base in scientific notation (e.g., $2 \cdot 10^3$ and $3 \cdot 10^4$)?
3. How can you quickly move between standard form and scientific notation?
4. What is the importance of significant figures in scientific notation?
5. How would you calculate $3.2 \cdot 10^2 \times 2.5 \cdot 10^3$?

Tip: When working with scientific notation, understanding the powers of 10 allows for faster computations!