Multiply Decimals practice worksheet with 20 problems for math learning.

Let’s solve each multiplication problem step by step.

We’re multiplying whole numbers by decimals. The easiest way is to:

1. Multiply the numbers as if they were whole numbers.
2. Count how many digits are after the decimal point in the original problem.
3. Put that many digits after the decimal in your answer.

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Problem 1: 90 × 0.8

- 90 × 8 = 720
- 0.8 has 1 digit after decimal → put 1 digit after decimal in answer → 72.0 → 72

✔ Answer: 72

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Problem 2: 35 × 0.07

- 35 × 7 = 245
- 0.07 has 2 digits after decimal → put 2 digits after decimal → 2.45

✔ Answer: 2.45

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Problem 3: 9 × 0.06

- 9 × 6 = 54
- 0.06 has 2 digits after decimal → 0.54

✔ Answer: 0.54

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Problem 4: 35 × 0.1

- 35 × 1 = 35
- 0.1 has 1 digit after decimal → 3.5

✔ Answer: 3.5

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Problem 5: 23 × 0.2

- 23 × 2 = 46
- 0.2 has 1 digit after decimal → 4.6

✔ Answer: 4.6

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Problem 6: 29 × 0.1

- 29 × 1 = 29
- 0.1 has 1 digit after decimal → 2.9

✔ Answer: 2.9

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Problem 7: 11 × 0.01

- 11 × 1 = 11
- 0.01 has 2 digits after decimal → 0.11

✔ Answer: 0.11

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Problem 8: 81 × 0.06

- 81 × 6 = 486
- 0.06 has 2 digits after decimal → 4.86

✔ Answer: 4.86

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Problem 9: 86 × 0.05

- 86 × 5 = 430
- 0.05 has 2 digits after decimal → 4.30 → 4.3

✔ Answer: 4.3

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Problem 10: 89 × 0.5

- 89 × 5 = 445
- 0.5 has 1 digit after decimal → 44.5

✔ Answer: 44.5

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Problem 11: 51 × 0.04

- 51 × 4 = 204
- 0.04 has 2 digits after decimal → 2.04

✔ Answer: 2.04

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Problem 12: 26 × 0.05

- 26 × 5 = 130
- 0.05 has 2 digits after decimal → 1.30 → 1.3

✔ Answer: 1.3

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Problem 13: 78 × 0.09

- 78 × 9 = 702
- 0.09 has 2 digits after decimal → 7.02

✔ Answer: 7.02

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Problem 14: 87 × 0.07

- 87 × 7 = 609
- 0.07 has 2 digits after decimal → 6.09

✔ Answer: 6.09

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Problem 15: 14 × 0.06

- 14 × 6 = 84
- 0.06 has 2 digits after decimal → 0.84

✔ Answer: 0.84

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Problem 16: 57 × 0.05

- 57 × 5 = 285
- 0.05 has 2 digits after decimal → 2.85

✔ Answer: 2.85

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Problem 17: 53 × 0.4

- 53 × 4 = 212
- 0.4 has 1 digit after decimal → 21.2

✔ Answer: 21.2

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Problem 18: 37 × 0.2

- 37 × 2 = 74
- 0.2 has 1 digit after decimal → 7.4

✔ Answer: 7.4

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Problem 19: 54 × 0.02

- 54 × 2 = 108
- 0.02 has 2 digits after decimal → 1.08

✔ Answer: 1.08

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Problem 20: 73 × 0.8

- 73 × 8 = 584
- 0.8 has 1 digit after decimal → 58.4

✔ Answer: 58.4

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Final Answer:
72, 2.45, 0.54, 3.5, 4.6, 2.9, 0.11, 4.86, 4.3, 44.5, 2.04, 1.3, 7.02, 6.09, 0.84, 2.85, 21.2, 7.4, 1.08, 58.4