Negative Decimal Multiplication worksheet with 24 problems for practice.

Let's solve each of the negative decimal multiplication problems step by step.

We’ll follow the rules for multiplying decimals and signs:

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

Also, when multiplying decimals:
1. Ignore the signs first.
2. Multiply as if they were whole numbers.
3. Count the total number of decimal places in both numbers.
4. Place the decimal point in the product so that it has the same number of decimal places.
5. Apply the correct sign based on the rule above.

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Let’s go through each problem:

#### Row 1:
1. $ 0.9 \times -1.3 = $
- $ 0.9 \times 1.3 = 1.17 $
- One positive, one negative → negative
- Answer: -1.17

2. $ -0.9 \times -1.6 = $
- $ 0.9 \times 1.6 = 1.44 $
- Both negative → positive
- Answer: 1.44

3. $ 3.1 \times -1.3 = $
- $ 3.1 \times 1.3 = 4.03 $
- One positive, one negative → negative
- Answer: -4.03

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#### Row 2:
4. $ 1.3 \times -2.5 = $
- $ 1.3 \times 2.5 = 3.25 $
- One positive, one negative → negative
- Answer: -3.25

5. $ -0.9 \times 1.2 = $
- $ 0.9 \times 1.2 = 1.08 $
- One negative, one positive → negative
- Answer: -1.08

6. $ 4.4 \times -1.8 = $
- $ 4.4 \times 1.8 = 7.92 $
- One positive, one negative → negative
- Answer: -7.92

---

#### Row 3:
7. $ -4.2 \times 5 = $
- $ 4.2 \times 5 = 21.0 $
- One negative, one positive → negative
- Answer: -21.0

8. $ -0.2 \times -4.2 = $
- $ 0.2 \times 4.2 = 0.84 $
- Both negative → positive
- Answer: 0.84

9. $ -1.2 \times 1.3 = $
- $ 1.2 \times 1.3 = 1.56 $
- One negative, one positive → negative
- Answer: -1.56

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#### Row 4:
10. $ -2.5 \times -2 = $
- $ 2.5 \times 2 = 5.0 $
- Both negative → positive
- Answer: 5.0

11. $ 0.3 \times -3.5 = $
- $ 0.3 \times 3.5 = 1.05 $
- One positive, one negative → negative
- Answer: -1.05

12. $ -6.1 \times -1.7 = $
- $ 6.1 \times 1.7 = 10.37 $
- Both negative → positive
- Answer: 10.37

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#### Row 5:
13. $ -0.5 \times -1.4 = $
- $ 0.5 \times 1.4 = 0.7 $
- Both negative → positive
- Answer: 0.7

14. $ 0.2 \times -4.1 = $
- $ 0.2 \times 4.1 = 0.82 $
- One positive, one negative → negative
- Answer: -0.82

15. $ -0.3 \times -1.6 = $
- $ 0.3 \times 1.6 = 0.48 $
- Both negative → positive
- Answer: 0.48

---

#### Row 6:
16. $ 4.1 \times -5 = $
- $ 4.1 \times 5 = 20.5 $
- One positive, one negative → negative
- Answer: -20.5

17. $ -1.4 \times -2.6 = $
- $ 1.4 \times 2.6 = 3.64 $
- Both negative → positive
- Answer: 3.64

18. $ 4.9 \times -1.6 = $
- $ 4.9 \times 1.6 = 7.84 $
- One positive, one negative → negative
- Answer: -7.84

---

#### Row 7:
19. $ 3 \times -1.9 = $
- $ 3 \times 1.9 = 5.7 $
- One positive, one negative → negative
- Answer: -5.7

20. $ -2.6 \times 1.8 = $
- $ 2.6 \times 1.8 = 4.68 $
- One negative, one positive → negative
- Answer: -4.68

21. $ 3.1 \times -1.5 = $
- $ 3.1 \times 1.5 = 4.65 $
- One positive, one negative → negative
- Answer: -4.65

---

#### Row 8:
22. $ -5.1 \times 1.4 = $
- $ 5.1 \times 1.4 = 7.14 $
- One negative, one positive → negative
- Answer: -7.14

23. $ 1.8 \times -1.5 = $
- $ 1.8 \times 1.5 = 2.7 $
- One positive, one negative → negative
- Answer: -2.7

24. $ -5.4 \times 2.4 = $
- $ 5.4 \times 2.4 = 12.96 $
- One negative, one positive → negative
- Answer: -12.96

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#### Row 9:
25. $ -5 \times -1.2 = $
- $ 5 \times 1.2 = 6.0 $
- Both negative → positive
- Answer: 6.0

26. $ -0.3 \times -1.7 = $
- $ 0.3 \times 1.7 = 0.51 $
- Both negative → positive
- Answer: 0.51

27. $ -5.2 \times -6.3 = $
- $ 5.2 \times 6.3 = 32.76 $
- Both negative → positive
- Answer: 32.76

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#### Row 10:
28. $ -0.9 \times -6 = $
- $ 0.9 \times 6 = 5.4 $
- Both negative → positive
- Answer: 5.4

29. $ -3.2 \times -1.7 = $
- $ 3.2 \times 1.7 = 5.44 $
- Both negative → positive
- Answer: 5.44

30. $ -0.7 \times -1.7 = $
- $ 0.7 \times 1.7 = 1.19 $
- Both negative → positive
- Answer: 1.19

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✔ Final Answers (in order):

```
-1.17 1.44 -4.03
-3.25 -1.08 -7.92
-21.0 0.84 -1.56
5.0 -1.05 10.37
0.7 -0.82 0.48
-20.5 3.64 -7.84
-5.7 -4.68 -4.65
-7.14 -2.7 -12.96
6.0 0.51 32.76
5.4 5.44 1.19
```

You can now fill these into the worksheet!

Let me know if you'd like this in a printable format or need explanations for any specific problem.