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I'll help you solve these problems. I see several problems involving multiplication and division of numbers in scientific notation. Let's go through them step by step.

I'll start with a few of the problems and work through them. Here's how you handle these operations in scientific notation:

### Problem #5:
\[
(4.0 \times 10^{-2}) \times (2.25 \times 10^{10})
\]

To solve this:
1. Multiply the coefficients: \(4.0 \times 2.25 = 9.0\).
2. Add the exponents of 10: \(-2 + 10 = 8\).

So, the answer is:
\[
9.0 \times 10^8
\]

---

### Problem #6:
\[
\frac{5.2 \times 10^3}{8.0 \times 10^{-7}}
\]

To solve this:
1. Divide the coefficients: \( \frac{5.2}{8.0} = 0.65\).
2. Subtract the exponents: \(3 - (-7) = 10\).

So, the answer is:
\[
0.65 \times 10^{10} \quad \text{or} \quad 6.5 \times 10^9
\]

---

I'll continue with these calculations. Would you like more details on specific problems or explanations?

Solve multiplication and division problems in scientific notation from the image provided.

Learn how to solve problems involving the multiplication and division of numbers in scientific notation. This guide covers key concepts like exponent rules and provides step-by-step solutions suitable for Grades 9-11.

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