To solve \(18 \times 0.15\) using factors, we can break it down as follows:

1. Rewrite 0.15 as a fraction: 
   \[
   0.15 = \frac{15}{100} = \frac{3}{20}
   \]

2. Now, the original multiplication becomes:
   \[
   18 \times \frac{3}{20}
   \]

3. First, multiply the numerator (18 and 3):
   \[
   18 \times 3 = 54
   \]

4. Then divide the result by 20:
   \[
   \frac{54}{20} = 2.7
   \]

Thus, \(18 \times 0.15 = 2.7\).

Would you like further explanation on any step?

Here are 5 related questions:
1. What is \(25 \times 0.15\) using the same method?
2. How do you calculate \(18 \times 0.25\)?
3. What is \(36 \times 0.2\)?
4. Can you explain the process for multiplying decimals by fractions?
5. How would you simplify \(45 \times 0.1\)?

**Tip:** When multiplying by decimals, converting the decimal into a fraction can simplify calculations, especially when you know common fractions (like \(0.5 = \frac{1}{2}\)).

Learn how to solve the multiplication of 18 and 0.15 by converting the decimal into a fraction for easier calculation. This step-by-step solution is suitable for students in Grades 5-7, covering multiplication, fraction simplification, and decimal operations.

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