Free Measurement Worksheets | Metric System for Kids - Free Printable

Let's solve each question on the worksheet by estimating the most reasonable unit and value for each object. We'll go through each one step by step.

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1. The Height of a Ferris Wheel

Options:
- a. 7 m
- b. 80 m
- c. 7000 m
- d. 1 km

Analysis:
- A typical Ferris wheel is about the height of a tall building.
- 7 meters is about the height of a two-story house — too small.
- 7000 meters = 7 km — that’s over 20,000 feet, which is way too high (that’s more than Mount Everest).
- 1 km = 1000 meters — also far too large.
- 80 meters is reasonable — many real Ferris wheels are around 60–100 meters tall.

✔ Correct Answer: b. 80 m

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2. The Length of a Bed

Options:
- a. 75 inches
- b. 8 m
- c. 70 cm
- d. 15 feet

Analysis:
- A standard bed is about 6 to 7 feet long.
- 75 inches = 6.25 feet — this is close to standard bed length (a twin or full bed).
- 8 meters ≈ 26 feet — that’s huge (like a bus).
- 70 cm = 27.5 inches — too short (less than a person’s height).
- 15 feet = 180 inches — very long, not typical for a bed.

✔ Correct Answer: a. 75 inches

*(Note: Although 15 feet is close, it’s usually too long for a standard bed. 75 inches is standard.)*

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3. The Height of the Eiffel Tower

Options:
- a. 500 m
- b. 330 m
- c. 700 m
- d. 100 m

Analysis:
- The actual height of the Eiffel Tower is about 300 meters, including antennas.
- 330 meters is very close.
- 500 m and 700 m are too tall.
- 100 m is only about 3 stories — too short.

✔ Correct Answer: b. 330 m

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4. The Length of the Titanic

Options:
- a. 500 m
- b. 269 m
- c. 700 cm
- d. 100 km

Analysis:
- The RMS Titanic was approximately 269 meters long.
- 500 m is too long (over half a kilometer).
- 700 cm = 7 meters — tiny, like a car.
- 100 km = 100,000 meters — that’s 100 kilometers! Impossible.

✔ Correct Answer: b. 269 m

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5. The Height of the Statue of Liberty

Options:
- a. 100 m
- b. 80 cm
- c. 93 m
- d. 10 km

Analysis:
- The statue itself (not including the pedestal) is about 46 meters tall.
- But the total height from base to torch is around 93 meters.
- 100 m is close but slightly overestimated.
- 80 cm is just under a meter — too short.
- 10 km is absurd (10,000 meters).

✔ Correct Answer: c. 93 m

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6. The Length of a Rattlesnake

Options:
- a. 15 cm
- b. 1.5 m
- c. 1.2 km
- d. 15 m

Analysis:
- Most rattlesnakes are between 1 to 1.5 meters long.
- 15 cm = 6 inches — too short (like a small lizard).
- 1.2 km = 1200 meters — impossible (longer than a football field).
- 15 m = 50 feet — ridiculous.

✔ Correct Answer: b. 1.5 m

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✔ Final Answers:

| Question | Correct Answer |
|--------|----------------|
| 1. Ferris Wheel | b. 80 m |
| 2. Bed | a. 75 inches |
| 3. Eiffel Tower | b. 330 m |
| 4. Titanic | b. 269 m |
| 5. Statue of Liberty | c. 93 m |
| 6. Rattlesnake | b. 1.5 m |

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📝 Explanation Summary:

This worksheet tests unit estimation and real-world knowledge of sizes. You need to:
- Use common sense.
- Know approximate sizes of familiar objects.
- Eliminate clearly unreasonable options (e.g., 7000m for a Ferris wheel).
- Recognize appropriate units (e.g., meters for buildings, inches/feet for beds, centimeters for snakes).

Let me know if you'd like this turned into a printable answer key!