Metric Conversion Practice Worksheets :: 25 - 45 - Free Printable

It looks like you've uploaded a worksheet titled "Converting Centimeters and Millimeters (A)", which contains a series of conversion problems between centimeters (cm) and millimeters (mm). The goal is to convert measurements from one unit to the other using the relationship:

> 1 cm = 10 mm

Let’s go through each problem step by step, solving them and explaining the process.

---

🔁 Conversion Rules:

- To convert centimeters to millimeters: Multiply by 10
→ $ \text{mm} = \text{cm} \times 10 $
- To convert millimeters to centimeters: Divide by 10
→ $ \text{cm} = \frac{\text{mm}}{10} $

---

✔ Let's solve each row:

#### 1. 8.9 cm = _____ mm
→ $ 8.9 \times 10 = 89 $ mm
✔ Answer: 89 mm

#### 2. 38.2 cm = _____ mm
→ $ 38.2 \times 10 = 382 $ mm
✔ Answer: 382 mm

#### 3. 483 mm = _____ cm
→ $ 483 \div 10 = 48.3 $ cm
✔ Answer: 48.3 cm

#### 4. 38 mm = _____ cm
→ $ 38 \div 10 = 3.8 $ cm
✔ Answer: 3.8 cm

#### 5. 47.1 cm = _____ mm
→ $ 47.1 \times 10 = 471 $ mm
✔ Answer: 471 mm

#### 6. 348 mm = _____ cm
→ $ 348 \div 10 = 34.8 $ cm
✔ Answer: 34.8 cm

#### 7. 470 mm = _____ cm
→ $ 470 \div 10 = 47 $ cm
✔ Answer: 47 cm

#### 8. 17.2 cm = _____ mm
→ $ 17.2 \times 10 = 172 $ mm
✔ Answer: 172 mm

#### 9. 190 mm = _____ cm
→ $ 190 \div 10 = 19 $ cm
✔ Answer: 19 cm

#### 10. 156 mm = _____ cm
→ $ 156 \div 10 = 15.6 $ cm
✔ Answer: 15.6 cm

#### 11. 31 cm = _____ mm
→ $ 31 \times 10 = 310 $ mm
✔ Answer: 310 mm

#### 12. 9.8 cm = _____ mm
→ $ 9.8 \times 10 = 98 $ mm
✔ Answer: 98 mm

#### 13. 396 mm = _____ cm
→ $ 396 \div 10 = 39.6 $ cm
✔ Answer: 39.6 cm

#### 14. 365 mm = _____ cm
→ $ 365 \div 10 = 36.5 $ cm
✔ Answer: 36.5 cm

#### 15. 28.6 cm = _____ mm
→ $ 28.6 \times 10 = 286 $ mm
✔ Answer: 286 mm

#### 16. 4 cm = _____ mm
→ $ 4 \times 10 = 40 $ mm
✔ Answer: 40 mm

#### 17. 21.4 cm = _____ mm
→ $ 21.4 \times 10 = 214 $ mm
✔ Answer: 214 mm

#### 18. 439 mm = _____ cm
→ $ 439 \div 10 = 43.9 $ cm
✔ Answer: 43.9 cm

#### 19. 17.2 cm = _____ mm
→ $ 17.2 \times 10 = 172 $ mm
✔ Answer: 172 mm

#### 20. 38 mm = _____ cm
→ $ 38 \div 10 = 3.8 $ cm
✔ Answer: 3.8 cm

#### 21. 9.3 cm = _____ mm
→ $ 9.3 \times 10 = 93 $ mm
✔ Answer: 93 mm

#### 22. 36.2 cm = _____ mm
→ $ 36.2 \times 10 = 362 $ mm
✔ Answer: 362 mm

#### 23. 24.7 cm = _____ mm
→ $ 24.7 \times 10 = 247 $ mm
✔ Answer: 247 mm

#### 24. 29 mm = _____ cm
→ $ 29 \div 10 = 2.9 $ cm
✔ Answer: 2.9 cm

---

✔ Final Answer Key (in order):

| Problem | Answer |
|--------|--------|
| 8.9 cm | 89 mm |
| 38.2 cm | 382 mm |
| 483 mm | 48.3 cm |
| 38 mm | 3.8 cm |
| 47.1 cm | 471 mm |
| 348 mm | 34.8 cm |
| 470 mm | 47 cm |
| 17.2 cm | 172 mm |
| 190 mm | 19 cm |
| 156 mm | 15.6 cm |
| 31 cm | 310 mm |
| 9.8 cm | 98 mm |
| 396 mm | 39.6 cm |
| 365 mm | 36.5 cm |
| 28.6 cm | 286 mm |
| 4 cm | 40 mm |
| 21.4 cm | 214 mm |
| 439 mm | 43.9 cm |
| 17.2 cm | 172 mm |
| 38 mm | 3.8 cm |
| 9.3 cm | 93 mm |
| 36.2 cm | 362 mm |
| 24.7 cm | 247 mm |
| 29 mm | 2.9 cm |

---

📝 Summary:

- Always remember: 1 cm = 10 mm
- Multiply when converting cm → mm
- Divide when converting mm → cm
- Move the decimal point one place to the right for cm → mm, and one place to the left for mm → cm

Let me know if you'd like this as a printable answer sheet or need help with similar conversions!