➗ Algebra – Math We Use in Real Life

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🔢 What is Algebra?

Algebra is a type of math that uses:

• Numbers
• Letters (like x or y)
• Rules

The letters stand for unknown numbers.

🧠 Example:
If x + 3 = 7, then x = 4

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🧩 Why do we use Algebra?

We use algebra to:

• Find unknown values
• Solve problems
• Plan and predict things

👉 It helps us think logically and solve real-life problems.

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🏪 Algebra in everyday life

🛒 Shopping

If:

• One chocolate costs ₹10
• You buy x chocolates

Total cost = 10 × x

If you have ₹50:

• 10 × x = 50
• x = 5 chocolates 🍫

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⏰ Time and speed

If you travel at 30 km per hour:

• Distance = 30 × time

If time = 2 hours:

• Distance = 30 × 2 = 60 km 🚲

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🍕 Sharing food

If you have x slices of pizza and 4 friends:

• Each friend gets x ÷ 4 slices

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🏗️ Building things

Builders use algebra to:

• Measure lengths 📏
• Calculate materials
• Make sure buildings are safe

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📱 Phones and games

• Game scores use variables
• Apps calculate data using formulas
• Phone batteries show time left using math

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🧠 Easy to remember

Algebra helps us find the missing number in real life 🔍

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⭐ Fun facts for kids

• Algebra is used by:
  • Shopkeepers 🏪
  • Engineers 👷
  • Scientists 🔬
  • Game designers 🎮
• You use algebra even when you don’t notice it!
• The word algebra comes from an old Arabic word meaning “put together”

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