Converting and Calculating Units of Length
Learn how to convert between mm, cm, m, and km, and add and subtract lengths. Let's get started! 🚀
Video Lesson
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Flashcards
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🛎️ What are Metric Units of Length?
- Length is measured in millimetres (mm), centimetres (cm), metres (m), and kilometres (km)
- The conversion rates you have to know: 10 mm = 1 cm, 100 cm = 1 m, and 1000 m = 1 km
🛎️ How to Convert Units of Length?
- Converting to a smaller unit means multiplying; converting to a larger unit means dividing.
- For example, 47 m = 4700 cm (multiply by 100) and 5200 m = 5.2 km (divide by 1000).
🛎️ How to Calculate with Different Units?
- Before adding or subtracting, convert all values to the same unit.
- Choose one unit (e.g. all cm or all m) and do not mix units.
Practice Questions
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Interactive Activity
Visualise length units and convert between them
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