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Understanding Units of Measurement

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Understanding Units of Measurement

Measurement tools illustration

📏 Part 1: Units and Conversions

1. Which unit would be most appropriate for measuring the height of your classroom?

millimetres

centimetres

metres

kilometres

2. Convert these metric measurements:

a) 2.5 kg = _________ grams

b) 1500 mL = _________ litres

c) 350 cm = _________ metres

d) 0.75 L = _________ millilitres

3. Which of these are metric units? (Check all that apply)

kilograms

inches

litres

pounds

centimetres

4. What does the prefix "kilo-" mean?

one tenth (0.1)

one hundredth (0.01)

one thousand (1000)

one million (1,000,000)

⚖️ Part 2: Practical Applications

5. Match each measurement task with the most appropriate unit:

a) Weight of a newborn baby: _____________

b) Distance from Auckland to Wellington: _____________

c) Amount of milk in a glass: _____________

d) Thickness of a coin: _____________

Units to choose from: millimetres, kilometres, kilograms, millilitres

6. Why does New Zealand primarily use the metric system, but we still encounter imperial units sometimes?
7. A recipe calls for 2 pounds of flour. If 1 pound ≈ 450 grams, approximately how many kilograms of flour do you need?
8. Circle the measurement that makes the most sense:

a) A person's height: 175 cm or 175 mm

b) A car's fuel tank: 60 L or 60 mL

c) A paperclip's mass: 1 g or 1 kg

🔍 Part 3: Critical Thinking

9. Explain why it's important to choose the correct unit when measuring. Give an example of what could go wrong if you used the wrong unit.
10. A swimming pool contains 50,000 litres of water. Express this volume using a more appropriate metric unit and explain your choice.

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