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To quickly multiply the numbers in the problem, you can break it down into smaller steps:

The problem is \(0.008 \times 25\).

### Step-by-Step Solution:

1. **Multiply the numbers as if they are whole numbers:**
   \[
   8 \times 25 = 200
   \]

2. **Adjust for the decimal places:**
   Since 0.008 has three decimal places, the result will also need to have three decimal places.
   \[
   0.008 \times 25 = 0.200 = 0.2
   \]

So, the correct answer is **B. 0.2**.

### Quick Tips:
- If you need to multiply a small decimal by a whole number, first ignore the decimal and do the multiplication. Then, place the decimal in the product according to the number of decimal places in the original decimal.

Would you like more details or have any other questions? Here are five related questions to practice:

1. What is \(0.07 \times 50\)?
2. How would you multiply \(0.004 \times 10\) quickly?
3. What is the result of \(0.09 \times 100\)?
4. How do you multiply \(0.03 \times 75\)?
5. What is \(0.005 \times 40\)?

**Tip:** Practicing multiplication with decimals often helps in gaining speed and accuracy!

Learn how to quickly multiply decimals with a step-by-step solution. Practice problems include multiplying decimals by whole numbers, adjusting for decimal places, and improving speed and accuracy in multiplication. Suitable for students in Grades 4-6.

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