To find the factors of \(-40\) that sum up to 3, we need to identify two numbers that:

1. Multiply to \(-40\)
2. Add up to 3

Let’s find them step by step:

### Step 1: Find Factor Pairs of \(-40\)
The factors of \(-40\) can be formed by pairing positive and negative factors of 40:

\[
(-1, 40), \ (1, -40), \ (-2, 20), \ (2, -20), \ (-4, 10), \ (4, -10), \ (-5, 8), \ (5, -8)
\]

### Step 2: Check Which Pair Sums to 3
Now, we look for the pair that adds up to 3:

- \((-5) + 8 = 3\)

Thus, the factors of \(-40\) that add up to 3 are \(-5\) and \(8\).

### Conclusion:
The two factors you are looking for are \(-5\) and \(8\).

Would you like more details or have any questions?

Here are 5 related questions for further practice:
1. What are the factors of \(-48\) that add up to 4?
2. What two numbers multiply to 60 and sum to 19?
3. Can you find two numbers that multiply to \(-36\) and sum to 0?
4. What are the factors of 24 that add up to 11?
5. What pair of numbers multiply to \(-12\) and sum to \(-4\)?

**Tip:** When solving factor-related problems, always check for both positive and negative factor pairs, especially with negative products.

Discover how to find the factors of -40 that add up to 3. This problem walks you through identifying factor pairs and verifying the sum step by step. Perfect for students in Grades 6-8, focusing on factorization and integer operations.

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