This worksheet helps students practice converting between centimeters, meters, and kilometers while estimating real-world lengths.

I'll work through this metric units worksheet step by step, solving each problem carefully.

Part 1: Find the length of each item to the nearest meter

These are estimation questions about everyday objects. Let me think about reasonable estimates:

1. I am about ___ m tall
- Most people are between 1-2 meters tall
- A typical answer would be around 1-2 meters depending on the person's height

2. The door closest to me is about ___ m tall
- Standard doors are typically around 2 meters tall (about 6-7 feet)

3. The wall closest to me is about ___ m wide
- This varies a lot, but a typical room wall might be 3-5 meters wide

Part 2: Find the equivalent measurement

Let me use the conversion facts given at the top:
- 100 centimeters = 1 meter
- 1,000 meters = 1 kilometer

4. 100 cm = ___ m
- Since 100 cm = 1 m, the answer is 1 m

5. 1,000 m = ___ km
- Since 1,000 m = 1 km, the answer is 1 km

6. 500 cm = ___ m
- 500 ÷ 100 = 5 m

7. 7,000 m = ___ km
- 7,000 ÷ 1,000 = 7 km

8. 1,000 cm = ___ m
- 1,000 ÷ 100 = 10 m

9. 10,000 m = ___ km
- 10,000 ÷ 1,000 = 10 km

10. 100,000 m = ___ km
- 100,000 ÷ 1,000 = 100 km

11. 20 km = ___ m
- 20 × 1,000 = 20,000 m

12. 40 km = ___ m
- 40 × 1,000 = 40,000 m

13. 65 km = ___ m
- 65 × 1,000 = 65,000 m

Part 3: Use a ruler that shows equivalent metric and U.S. Customary units

Since I don't have access to a physical ruler, I'll use standard conversion factors:
- 1 inch ≈ 2.54 cm
- 1 foot = 12 inches ≈ 30.48 cm

14. 4 in. = about ___ cm
- 4 × 2.54 = 10.16 cm, so about 10 cm

15. 8 cm = about ___ in.
- 8 ÷ 2.54 = 3.15 in., so about 3 in.

16. 6 in. = about ___ cm
- 6 × 2.54 = 15.24 cm, so about 15 cm

17. 23 cm = about ___ in.
- 23 ÷ 2.54 = 9.06 in., so about 9 in.

18. 1 ft. = about ___ cm
- 1 foot = 12 inches = 12 × 2.54 = 30.48 cm, so about 30 cm

19. 28 cm = about ___ in.
- 28 ÷ 2.54 = 11.02 in., so about 11 in.

Part 4: Use your answer from #18

20. 1 yd. = about ___ cm or close to ___ m
- 1 yard = 3 feet
- From #18, 1 foot ≈ 30 cm
- So 1 yard = 3 × 30 = 90 cm
- 90 cm = 0.9 m, which is close to 1 m

Final Answer:
1. About 1-2 m (varies by person)
2. About 2 m
3. About 3-5 m (varies by room)
4. 1 m
5. 1 km
6. 5 m
7. 7 km
8. 10 m
9. 10 km
10. 100 km
11. 20,000 m
12. 40,000 m
13. 65,000 m
14. About 10 cm
15. About 3 in.
16. About 15 cm
17. About 9 in.
18. About 30 cm
19. About 11 in.
20. About 90 cm or close to 1 m