Metric System Conversions Worksheet for 3rd - 5th Grade | Lesson ... - Free Printable

Let’s solve each problem step by step. We’re converting between metric units of length. Remember:

- 1 meter = 1000 millimeters
- 1 meter = 100 centimeters
- 1 kilometer = 1000 meters
- 1 hectometer = 100 meters
- 1 decameter = 10 meters
- 1 decimeter = 0.1 meters (or 10 decimeters = 1 meter)
- 1 centimeter = 0.01 meters (or 100 cm = 1 m)
- 1 millimeter = 0.001 meters (or 1000 mm = 1 m)

We’ll use these to convert.

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1) 2 meters = ______ millimeters

Since 1 meter = 1000 millimeters,
→ 2 meters = 2 × 1000 = 2000 millimeters

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2) 1 meter = ______ centimeter

1 meter = 100 centimeters → so answer is 100

*(Note: The worksheet says “centimeter” singular — but we still write the number for how many centimeters are in 1 meter.)*

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3) 8 kilometers = ______ centimeter

First, convert km to meters:
8 km = 8 × 1000 = 8000 meters

Then convert meters to centimeters:
8000 meters = 8000 × 100 = 800,000 centimeters

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4) 2 centimeters = ______ millimeters

1 cm = 10 mm → so 2 cm = 2 × 10 = 20 millimeters

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5) 10 hectometers = ______ meters

1 hectometer = 100 meters → 10 hm = 10 × 100 = 1000 meters

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6) 30 decimeters = ______ decameters

This one is trickier. Let’s go step by step.

We know:
- 1 decimeter = 0.1 meters → so 30 dm = 30 × 0.1 = 3 meters
- 1 decameter = 10 meters → so to get decameters from meters, divide by 10

So: 3 meters ÷ 10 = 0.3 decameters

Alternatively, think:
How many decimeters in a decameter?
1 decameter = 10 meters = 10 × 10 = 100 decimeters
So 30 decimeters = 30 / 100 = 0.3 decameters

✔ Same answer.

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Final Answer:
1) 2000
2) 100
3) 800000
4) 20
5) 1000
6) 0.3