Class 5 Notes - Temperature and Money

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Temperature

Temperature is a measure of how hot or cold something is. It is measured using different units such as Celsius (°C), Fahrenheit (°F), and Kelvin (K).

Common Temperature Units

  • Celsius (°C) - Used in most countries
  • Fahrenheit (°F) - Used primarily in the United States
  • Kelvin (K) - Used in scientific calculations

Temperature Conversions

  • °C to °F: (°C × 9/5) + 32
  • °F to °C: (°F - 32) × 5/9
  • °C to K: °C + 273.15

Examples

Example 1: Convert 25°C to Fahrenheit.

Solution: (25 × 9/5) + 32 = 77°F

Money

Money is a medium of exchange used for buying goods and services. Different countries have different currencies.

Common Currencies

  • Indian Rupee (INR)
  • US Dollar (USD)
  • Euro (EUR)
  • British Pound (GBP)

Basic Money Operations

  • Addition and subtraction of money
  • Multiplication and division of money
  • Conversion of currencies

Examples

Example 2: If an apple costs ₹20 and a banana costs ₹15, what is the total cost?

Solution: ₹20 + ₹15 = ₹35

Conclusion

Understanding temperature and money is essential for everyday activities. Temperature helps us prepare for different weather conditions, while money is used for transactions and budgeting.