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The problem asks to compute:

\[
(3.5 \times 10^7) + (2.4 \times 10^8)
\]

and give the answer in standard index form.

### Step 1: Express both numbers with the same power of 10
To add these numbers, it's easier if both terms have the same exponent. We can rewrite \(3.5 \times 10^7\) with the same exponent as \(10^8\).

\[
3.5 \times 10^7 = 0.35 \times 10^8
\]

### Step 2: Add the two terms
Now add \(0.35 \times 10^8\) and \(2.4 \times 10^8\):

\[
0.35 \times 10^8 + 2.4 \times 10^8 = (0.35 + 2.4) \times 10^8 = 2.75 \times 10^8
\]

### Final Answer:
\[
2.75 \times 10^8
\]

Would you like more details on any step, or do you have other questions?

Here are 5 related questions:
1. How do you subtract numbers in standard form?
2. What is the general rule for multiplying numbers in index form?
3. How do you convert numbers between standard form and scientific notation?
4. What happens if you have to multiply or divide terms with different powers of 10?
5. Can you explain how to handle exponents when adding numbers in standard form?

**Tip**: When adding or subtracting numbers in standard form, make sure to align the exponents for easier calculation.

Work out (3.5 × 10^7) + (2.4 × 10^8). Give your answer in standard index form.

Learn how to solve the addition of numbers in standard index form: (3.5 × 10^7) + (2.4 × 10^8). This guide walks through aligning exponents and providing the answer in proper scientific notation. Suitable for students in Grades 8-10.

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