https://file.aiquickdraw.com/mathbot/file/1726704601400ipmhvsv4.jpg

To solve the problem presented, we need to find the difference between \( 0.00067 \) and \( 2.3 \times 10^{-5} \) and express the result in scientific notation.

### Step 1: Convert both numbers to scientific notation
- \( 0.00067 = 6.7 \times 10^{-4} \)
- \( 2.3 \times 10^{-5} \) is already in scientific notation.

### Step 2: Align the powers of 10
We need to express both numbers with the same power of 10 to subtract them. Let's rewrite \( 6.7 \times 10^{-4} \) as:
\[ 6.7 \times 10^{-4} = 67 \times 10^{-5} \]

Now, we can subtract the numbers:
\[
67 \times 10^{-5} - 2.3 \times 10^{-5} = (67 - 2.3) \times 10^{-5} = 64.7 \times 10^{-5}
\]

### Step 3: Express in proper scientific notation
Now express \( 64.7 \times 10^{-5} \) in standard scientific notation:
\[
64.7 \times 10^{-5} = 6.47 \times 10^{-4}
\]

Thus, the difference written in scientific notation is:
\[
\boxed{6.47 \times 10^{-4}}
\]

This matches the first option provided in the image.

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Do you want further details or have any questions?

Here are some related questions:
1. How do you convert decimal numbers to scientific notation?
2. What are the rules for adding and subtracting numbers in scientific notation?
3. How do you multiply or divide numbers in scientific notation?
4. Can you explain how to convert large numbers to scientific notation?
5. What are common applications of scientific notation in science?

**Tip:** When performing operations in scientific notation, always ensure the powers of 10 are the same before adding or subtracting.

What is the difference written in scientific notation? 0.00067 - 2.3 × 10^-5

Learn how to subtract numbers in scientific notation, such as 0.00067 - 2.3 × 10^-5. This problem demonstrates key concepts in scientific notation and provides a step-by-step solution for students in Grades 8-10.

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