Multiplication Worksheets - Decimal Numbers Multiplication - Free Printable

Let's solve each of these multiplication problems involving decimals multiplied by 10, 100, or 1000.

🔍 Key Rule:

When multiplying a decimal by:
- 10, move the decimal point 1 place to the right
- 100, move the decimal point 2 places to the right
- 1000, move the decimal point 3 places to the right

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✔ Solutions:

1) 5.14 × 10 = 51.4
→ Move decimal 1 place right: 5.14 → 51.4

2) 0.05 × 100 = 5
→ Move decimal 2 places right: 0.05 → 5.0 → 5

3) 0.75 × 100 = 75
→ Move decimal 2 places right: 0.75 → 75

4) 0.406 × 10 = 4.06
→ Move decimal 1 place right: 0.406 → 4.06

5) 1.71 × 100 = 171
→ Move decimal 2 places right: 1.71 → 171

6) 35.51 × 10 = 355.1
→ Move decimal 1 place right: 35.51 → 355.1

7) 20.079 × 10 = 200.79
→ Move decimal 1 place right: 20.079 → 200.79

8) 5.59 × 100 = 559
→ Move decimal 2 places right: 5.59 → 559

9) 4.642 × 10 = 46.42
→ Move decimal 1 place right: 4.642 → 46.42

10) 8.013 × 10 = 80.13
→ Move decimal 1 place right: 8.013 → 80.13

11) 2.061 × 10 = 20.61
→ Move decimal 1 place right: 2.061 → 20.61

12) 7.01 × 100 = 701
→ Move decimal 2 places right: 7.01 → 701

13) 10.10 × 10 = 101.0 → 101
→ Move decimal 1 place right: 10.10 → 101.0 → 101

14) 5.531 × 10 = 55.31
→ Move decimal 1 place right: 5.531 → 55.31

15) 9.073 × 10 = 90.73
→ Move decimal 1 place right: 9.073 → 90.73

16) 45.21 × 100 = 4521
→ Move decimal 2 places right: 45.21 → 4521

17) 3.07 × 100 = 307
→ Move decimal 2 places right: 3.07 → 307

18) 62.20 × 100 = 6220
→ Move decimal 2 places right: 62.20 → 6220

19) 84.47 × 10 = 844.7
→ Move decimal 1 place right: 84.47 → 844.7

20) 99.99 × 10 = 999.9
→ Move decimal 1 place right: 99.99 → 999.9

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✔ Final Answers:

1) 51.4
2) 5
3) 75
4) 4.06
5) 171
6) 355.1
7) 200.79
8) 559
9) 46.42
10) 80.13
11) 20.61
12) 701
13) 101
14) 55.31
15) 90.73
16) 4521
17) 307
18) 6220
19) 844.7
20) 999.9

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✔ Tip: Always count how many zeros are in the multiplier (10, 100, 1000), and move the decimal that many places to the right. Add zeros if needed!

Let me know if you'd like this as a printable answer sheet!