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Measuring Units Worksheet for converting between metric units such as meters, kilometers, liters, milliliters, grams, and kilograms.

Measuring Units Worksheet with conversion problems for length, volume, and mass in metric units.

Measuring Units Worksheet with conversion problems for length, volume, and mass in metric units.

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Show Answer Key & Explanations Step-by-step solution for: Free Grade 3 Measuring Worksheets
Let's solve each problem on the Measuring Units Worksheet step by step. We'll convert the given units using standard metric conversions.

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Key Conversion Factors:



- Length:
- 1 km = 1,000 m
- 1 m = 100 cm
- 1 cm = 10 mm

- Volume:
- 1 L = 1,000 mL

- Mass:
- 1 kg = 1,000 g

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Now, let's go through each question:

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1 a. 2,000 m = _____ km


Since 1 km = 1,000 m →
2,000 ÷ 1,000 = 2 km
Answer: 2

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1 b. 9 km = _____ m


9 × 1,000 = 9,000 m
Answer: 9,000

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2 a. 9,000 mL = _____ L


1 L = 1,000 mL →
9,000 ÷ 1,000 = 9 L
Answer: 9

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2 b. 3 kg = _____ g


3 × 1,000 = 3,000 g
Answer: 3,000

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3 a. 6 L = _____ mL


6 × 1,000 = 6,000 mL
Answer: 6,000

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3 b. 90 mm = _____ cm


1 cm = 10 mm →
90 ÷ 10 = 9 cm
Answer: 9

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4 a. 6 cm = _____ mm


6 × 10 = 60 mm
Answer: 60

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4 b. 4 km = _____ m


4 × 1,000 = 4,000 m
Answer: 4,000

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5 a. 1,000 m = _____ km


1,000 ÷ 1,000 = 1 km
Answer: 1

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5 b. 2,000 g = _____ kg


2,000 ÷ 1,000 = 2 kg
Answer: 2

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6 a. 50 mm = _____ cm


50 ÷ 10 = 5 cm
Answer: 5

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6 b. 400 cm = _____ m


400 ÷ 100 = 4 m
Answer: 4

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7 a. 4 L = _____ mL


4 × 1,000 = 4,000 mL
Answer: 4,000

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7 b. 3 km = _____ m


3 × 1,000 = 3,000 m
Answer: 3,000

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8 a. 10,000 g = _____ kg


10,000 ÷ 1,000 = 10 kg
Answer: 10

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8 b. 2 cm = _____ mm


2 × 10 = 20 mm
Answer: 20

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9 a. 10,000 m = _____ km


10,000 ÷ 1,000 = 10 km
Answer: 10

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9 b. 9,000 g = _____ kg


9,000 ÷ 1,000 = 9 kg
Answer: 9

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10 a. 4,000 g = _____ kg


4,000 ÷ 1,000 = 4 kg
Answer: 4

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10 b. 8,000 mL = _____ L


8,000 ÷ 1,000 = 8 L
Answer: 8

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Final Answers:



| Problem | Answer |
|--------|--------|
| 1a | 2 km |
| 1b | 9,000 m |
| 2a | 9 L |
| 2b | 3,000 g |
| 3a | 6,000 mL |
| 3b | 9 cm |
| 4a | 60 mm |
| 4b | 4,000 m |
| 5a | 1 km |
| 5b | 2 kg |
| 6a | 5 cm |
| 6b | 4 m |
| 7a | 4,000 mL |
| 7b | 3,000 m |
| 8a | 10 kg |
| 8b | 20 mm |
| 9a | 10 km |
| 9b | 9 kg |
| 10a | 4 kg |
| 10b | 8 L |

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This worksheet helps students practice converting between common metric units of length, volume, and mass. The key is remembering the base unit relationships (like 1000 for kilo-, 100 for centi-, 10 for milli-) and whether to multiply or divide depending on direction of conversion.
Parent Tip: Review the logic above to help your child master the concept of measurement equivalents worksheet.
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