Practice worksheet for multiplying positive and negative integers with examples and exercises.

Let's solve the multiplication problems involving positive and negative integers step by step. The key rule to remember is:

- Positive × Positive = Positive
- Negative × Negative = Positive
- Positive × Negative = Negative
- Negative × Positive = Negative

We'll apply this rule to each problem.

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Problem 1:

7 × (-3) = ?
→ Positive × Negative = Negative
7 × 3 = 21 → So, answer is -21
✔ Answer: -21 (negative)

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Problem 2:

5 × 6 = ?
→ Positive × Positive = Positive
5 × 6 = 30
✔ Answer: 30 (positive)

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Problem 3:

-8 × 3 = ?
→ Negative × Positive = Negative
8 × 3 = 24 → So, answer is -24
✔ Answer: -24 (negative)

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Problem 4:

-2 × 18 = ?
→ Negative × Positive = Negative
2 × 18 = 36 → So, answer is -36
✔ Answer: -36 (negative)

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Problem 5:

-4 × (-11) = ?
→ Negative × Negative = Positive
4 × 11 = 44 → So, answer is +44
✔ Answer: 44 (positive)

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Problem 6:

9 × 7 = ?
→ Positive × Positive = Positive
9 × 7 = 63
✔ Answer: 63 (positive)

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Problem 7:

-12 × 6 = ?
→ Negative × Positive = Negative
12 × 6 = 72 → So, answer is -72
✔ Answer: -72 (negative)

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Problem 8:

-15 × (-4) = ?
→ Negative × Negative = Positive
15 × 4 = 60 → So, answer is +60
✔ Answer: 60 (positive)

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Problem 9:

-1 × (-13) = ?
→ Negative × Negative = Positive
1 × 13 = 13 → So, answer is +13
✔ Answer: 13 (positive)

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Problem 10:

7 × (-8) = ?
→ Positive × Negative = Negative
7 × 8 = 56 → So, answer is -56
✔ Answer: -56 (negative)

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Problem 11:

-16 × (-21) = ?
→ Negative × Negative = Positive
16 × 21 = 336 → So, answer is +336
✔ Answer: 336 (positive)

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Final Answers:

| Problem | Answer | Sign |
|--------|--------|------|
| 1. 7 × (-3) | -21 | negative |
| 2. 5 × 6 | 30 | positive |
| 3. -8 × 3 | -24 | negative |
| 4. -2 × 18 | -36 | negative |
| 5. -4 × (-11) | 44 | positive |
| 6. 9 × 7 | 63 | positive |
| 7. -12 × 6 | -72 | negative |
| 8. -15 × (-4) | 60 | positive |
| 9. -1 × (-13) | 13 | positive |
| 10. 7 × (-8) | -56 | negative |
| 11. -16 × (-21) | 336 | positive |

✔ All answers are correct based on the rules of multiplying signed integers.

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