Practice multiplying decimals with this math worksheet, including problems and solutions for skill development.

Here are the solutions to the decimal multiplication problems shown on the worksheet.

1. $8.56 \times 21$
- First, multiply $856 \times 1 = 856$.
- Next, multiply $856 \times 20 = 17,120$.
- Add them together: $856 + 17,120 = 17,976$.
- The number $8.56$ has 2 decimal places. The number $21$ has 0. So, the answer needs 2 decimal places.
- Result: 179.76

2. $12.3 \times 15.2$
- Multiply $123 \times 152 = 18,696$.
- $12.3$ has 1 decimal place and $15.2$ has 1. Total: 2 decimal places.
- Result: 186.96

3. $6.089 \times 2.15$
- Multiply $6,089 \times 215 = 1,309,135$.
- $6.089$ has 3 decimal places and $2.15$ has 2. Total: 5 decimal places.
- Result: 13.09135

4. $12.36 \times 10.3$
- Multiply $1,236 \times 103 = 127,308$.
- $12.36$ has 2 decimal places and $10.3$ has 1. Total: 3 decimal places.
- Result: 127.308

5. $5.07 \times 92$
- Multiply $507 \times 92 = 46,644$.
- $5.07$ has 2 decimal places and $92$ has 0. Total: 2 decimal places.
- Result: 466.44

6. $80.2 \times 4.9$
- Multiply $802 \times 49 = 39,298$.
- $80.2$ has 1 decimal place and $4.9$ has 1. Total: 2 decimal places.
- Result: 392.98

7. $14.95 \times 0.41$
- Multiply $1,495 \times 41 = 61,295$.
- $14.95$ has 2 decimal places and $0.41$ has 2. Total: 4 decimal places.
- Result: 6.1295

8. $1.063 \times 5.24$
- Multiply $1,063 \times 524 = 557,012$.
- $1.063$ has 3 decimal places and $5.24$ has 2. Total: 5 decimal places.
- Result: 5.57012

9. $20.4 \times 4.53$
- Multiply $204 \times 453 = 92,412$.
- $20.4$ has 1 decimal place and $4.53$ has 2. Total: 3 decimal places.
- Result: 92.412

10. $9.31 \times 58$
- Multiply $931 \times 58 = 54,000 - 8 = 53,998$ (Wait, let's do standard multiplication: $931 \times 50 = 46,550$ and $931 \times 8 = 7,448$. Sum: $53,998$).
- $9.31$ has 2 decimal places and $58$ has 0. Total: 2 decimal places.
- Result: 539.98

11. $61.9 \times 7.2$
- Multiply $619 \times 72 = 44,568$.
- $61.9$ has 1 decimal place and $7.2$ has 1. Total: 2 decimal places.
- Result: 445.68

12. $2.406 \times 1.23$
- Multiply $2,406 \times 123 = 295,938$.
- $2.406$ has 3 decimal places and $1.23$ has 2. Total: 5 decimal places.
- Result: 2.95938

13. $4.2 \times 9.5$
- Multiply $42 \times 95 = 3,990$.
- $4.2$ has 1 decimal place and $9.5$ has 1. Total: 2 decimal places.
- Result: 39.90 (or just 39.9)

14. $10.54 \times 37$
- Multiply $1,054 \times 37 = 38,998$.
- $10.54$ has 2 decimal places and $37$ has 0. Total: 2 decimal places.
- Result: 389.98

15. $45.6 \times 21.3$
- Multiply $456 \times 213 = 97,128$.
- $45.6$ has 1 decimal place and $21.3$ has 1. Total: 2 decimal places.
- Result: 971.28

16. $7.32 \times 15.2$
- Multiply $732 \times 152 = 111,264$.
- $7.32$ has 2 decimal places and $15.2$ has 1. Total: 3 decimal places.
- Result: 111.264

17. $7.521 \times 6.108$
- Multiply $7,521 \times 6,108 = 45,938,268$.
- $7.521$ has 3 decimal places and $6.108$ has 3. Total: 6 decimal places.
- Result: 45.938268

18. $48.3 \times 1.02$
- Multiply $483 \times 102 = 49,266$.
- $48.3$ has 1 decimal place and $1.02$ has 2. Total: 3 decimal places.
- Result: 49.266

19. $39.04 \times 4.78$
- Multiply $3,904 \times 478 = 1,866,112$.
- $39.04$ has 2 decimal places and $4.78$ has 2. Total: 4 decimal places.
- Result: 186.6112

20. $7.504 \times 1.3$
- Multiply $7,504 \times 13 = 97,552$.
- $7.504$ has 3 decimal places and $1.3$ has 1. Total: 4 decimal places.
- Result: 9.7552

Final Answer:
1. 179.76
2. 186.96
3. 13.09135
4. 127.308
5. 466.44
6. 392.98
7. 6.1295
8. 5.57012
9. 92.412
10. 539.98
11. 445.68
12. 2.95938
13. 39.9
14. 389.98
15. 971.28
16. 111.264
17. 45.938268
18. 49.266
19. 186.6112
20. 9.7552