Integer multiplication practice worksheet with 20 problems.

Sure! Let’s solve all 20 integer multiplication problems step by step.

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📝 Key Rule for Multiplying Integers:

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

In short:
> Same signs → Positive result
> Different signs → Negative result

Now, let’s solve each problem:

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✔ Left Column (Problems 1–10)

1. 4 · -5
→ + × – = –
→ 4 × 5 = 20 → -20

2. -6 · -9
→ – × – = +
→ 6 × 9 = 54 → 54

3. -3 · 6
→ – × + = –
→ 3 × 6 = 18 → -18

4. 7 · 2
→ + × + = +
→ 7 × 2 = 14 → 14

5. -9 · -3
→ – × – = +
→ 9 × 3 = 27 → 27

6. -4 · 8
→ – × + = –
→ 4 × 8 = 32 → -32

7. 9 · -4
→ + × – = –
→ 9 × 4 = 36 → -36

8. -5 · -6
→ – × – = +
→ 5 × 6 = 30 → 30

9. -1 · 8
→ – × + = –
→ 1 × 8 = 8 → -8

10. 2 · -9
→ + × – = –
→ 2 × 9 = 18 → -18

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✔ Right Column (Problems 11–20)

11. -1 · 6
→ – × + = –
→ 1 × 6 = 6 → -6

12. -5 · -9
→ – × – = +
→ 5 × 9 = 45 → 45

13. 3 · 7
→ + × + = +
→ 3 × 7 = 21 → 21

14. 6 · -8
→ + × – = –
→ 6 × 8 = 48 → -48

15. -2 · 5
→ – × + = –
→ 2 × 5 = 10 → -10

16. -6 · -4
→ – × – = +
→ 6 × 4 = 24 → 24

17. 10 · -3
→ + × – = –
→ 10 × 3 = 30 → -30

18. -2 · -8
→ – × – = +
→ 2 × 8 = 16 → 16

19. -8 · 3
→ – × + = –
→ 8 × 3 = 24 → -24

20. 1 · -11
→ + × – = –
→ 1 × 11 = 11 → -11

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📋 Final Answers (All 20 Problems):

1. -20
2. 54
3. -18
4. 14
5. 27
6. -32
7. -36
8. 30
9. -8
10. -18
11. -6
12. 45
13. 21
14. -48
15. -10
16. 24
17. -30
18. 16
19. -24
20. -11

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✔ You can now fill in the worksheet with these answers!

Let me know if you’d like a printable version or explanation of any specific problem!