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To solve this expression in scientific notation:

Given:
\[
4.9 \times 10^{-5} + 0.0005
\]

First, convert \(0.0005\) into scientific notation:
\[
0.0005 = 5 \times 10^{-4}
\]

Now, rewrite the expression:
\[
4.9 \times 10^{-5} + 5 \times 10^{-4}
\]

To add these, convert \(4.9 \times 10^{-5}\) to an equivalent form with \(10^{-4}\) as the exponent:
\[
4.9 \times 10^{-5} = 0.49 \times 10^{-4}
\]

Now the expression is:
\[
0.49 \times 10^{-4} + 5 \times 10^{-4} = (0.49 + 5) \times 10^{-4} = 5.49 \times 10^{-4}
\]

Thus, the answer in scientific notation is:
\[
5.49 \times 10^{-4}
\]

Would you like more details on this solution or have any questions?

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Here are five additional questions that build on this topic:

1. How do you add or subtract numbers in scientific notation with different exponents?
2. What are the general rules for converting decimal numbers into scientific notation?
3. How do you multiply or divide numbers in scientific notation?
4. Why is scientific notation useful, particularly in science and engineering?
5. How would you express \(5.49 \times 10^{-4}\) in decimal form?

**Tip:** When adding or subtracting in scientific notation, ensure both terms have the same power of 10.

Express 4.9 * 10^-5 + 0.0005 in scientific notation.

Solve the addition of 4.9 * 10^-5 and 0.0005 by converting to scientific notation. Learn how to express the answer in scientific notation, covering key concepts of exponent conversion and addition in scientific notation. Ideal for students in Grades 8-10.

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