Foundation course: Week 1

Foundation Course: Week 1 (Number Sense)

• Fast Addition using complements in Vedic Mathematics is one of the most powerful mental math techniques. 
• It is primarily based on the sutra: 👉 Nikhilam Navatashcaramam Dashatah 
• This method is especially useful when numbers are close to a base like 10, 100, 1000, etc.

🧠 Core Idea (Concept)

Instead of adding numbers directly, we:

1. Convert numbers into their complements (deficits or surpluses) from a base.
2. Perform a simpler operation.
3. Adjust the result.

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• Foundation Course: Week 1 - Worksheet 

(click to Download the Worksheet)

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📌 Step-by-Step Method

🔹 Case 1: Numbers close to a base (like 100)

Example 1:

👉 Add: 96 + 88

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Step 1: Choose base

Nearest base = 100

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Step 2: Find complements

• 96 → -4 (since 100 - 96 = 4)
• 88 → -12 (since 100 - 88 = 12)

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Step 3: Cross addition

• 96 - 12 = 84
  OR
• 88 - 4 = 84

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Step 4: Add complements

• (-4) + (-12) = -16

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Step 5: Combine result

• 84 | -16

Since base is 100 (2 digits), write 16 as two digits:

👉 100 + 84 - 16 = 184    (or)

👉 (100 + 100) - 16 = 184

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✅ Final Answer: 96 + 88 = 184

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