Class 4 Notes - Length, Weight, Capacity, Time and Money

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Measurement of Length

Length is used to measure how long or short an object is.

  • 1 km = 1000 m
  • 1 m = 100 cm
  • 1 cm = 10 mm

Measurement of Weight

Weight tells us how heavy or light an object is.

  • 1 kg = 1000 g
  • 1 g = 1000 mg

Measurement of Capacity

Capacity measures the volume of liquids.

  • 1 L = 1000 mL

Measurement of Time

Time helps in scheduling and organizing events.

  • 1 min = 60 s
  • 1 hour = 60 min
  • 1 day = 24 hours

Measurement of Money

Money is essential for transactions.

  • Indian currency includes coins (₹1, ₹2, ₹5, ₹10) and notes (₹10, ₹20, ₹50, ₹100, ₹500, ₹2000).

Word Problems

Problem: A bag of rice weighs 5 kg. How many grams is this?

Solution: 5 kg × 1000 = 5000 g.

Summary

Understanding measurement helps in real-life applications and problem-solving.