Square of 75 using Vedic Maths?

Answer: 5625. Thinking Process & Exam Attack:Number ends in 5. Use 'Ekadhikena Purvena'.1. Take first digit: 7.2. Multiply by (7+1): 7 * 8 = 56.3. Append 25: 5625.

Answer: 1225. Exam Attack: 3 * 4 = 12. Append 25 -> 1225.

Answer: 9025. Exam Attack: 9 * 10 = 90. Append 25 -> 9025.

92 * 98 (using base 100)?

Answer: 9016. Exam Attack: Deviations: -8 and -2. 1. Cross subtract: 92 - 2 = 90. 2. Multiply deviations: 8 * 2 = 16. Result: 9016.

Answer: 10816. Exam Attack: (100 + 4) -> Base 100. 1. 104 + 4 = 108. 2. 4² = 16. Result: 10816.

Answer: 2025. Exam Attack: 4 * 5 = 20. Append 25 -> 2025.

Answer: 11021. Exam Attack: Both are near base 100. 1. 107 + 3 = 110. 2. 7 * 3 = 21. Result: 11021.

Square of 996 (using base 1000)?

Answer: 992016. Exam Attack: Base 1000. Deviation -4. 1. 996 - 4 = 992. 2. (-4)² = 16. For base 1000, we need 3 digits: 016. Result: 992016.

Answer: 13225. Exam Attack: 11 * 12 = 132. Append 25 -> 13225.

Answer: 12321. Thinking Process: Pattern for square of 1s: count digits (3). Write 1 to 3 and back to 1. Result: 12321.

Subtract 789 from 1000 using 'Nikhilam'?

Answer: 211. Exam Attack: All from 9, last from 10. (9-7)=2, (9-8)=1, (10-9)=1. Result: 211.

Answer: 3025. Exam Attack: 5 * 6 = 30. Append 25 -> 3025.

Answer: 625. Exam Attack: 2 * 3 = 6. Append 25 -> 625.

Answer: 7225. Exam Attack: 8 * 9 = 72. Append 25 -> 7225.

Answer: 11025. Exam Attack: 10 * 11 = 110. Append 25 -> 11025.

Answer: 38025. Exam Attack: 19 * 20 = 380. Append 25 -> 38025.

Answer: 988036. Exam Attack: Deviation -6. 994-6=988. 6²=36 (036). Result: 988036.

Answer: 225. Exam Attack: 1*2=2. Result 225.

Answer: 9021. Exam Attack: Deviations -3, -7. 97-7=90. 3*7=21. Result: 9021.

Answer: 4225. Exam Attack: 6*7=42. Append 25.

Answer: 42025. Exam Attack: 20*21=420. Append 25.

Answer: 12096. Exam Attack: 108+12=120. 8*12=96. Result: 12096.

Answer: 495. Exam Attack: (100-1)*5 = 500-5 = 495.

Answer: 121. Exam Attack: Pattern 1-2-1.

Answer: 1234321. Exam Attack: 4 ones -> 1234321.

Answer: 125. Exam Attack: Standard.

Answer: 15625. Exam Attack: 12*13=156. Result 15625.

Answer: 9801. Exam Attack: 99-1=98. 1²=1 (01). Result: 9801.

Answer: 2025. Exam Attack: 2025.

Answer: 5625. Exam Attack: 5625.

Home/Rajasthan 4th Grade Exam/Quantitative Aptitude/

Vedic Maths & Fast Calculation

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Expert Answer & Key Takeaways

Mastering Vedic Maths & Fast Calculation is essential for high-fidelity technical architecture and senior engineering roles in 2026.

Ekadhikena Purvena (One more than previous)

Used for squaring numbers ending in 5. E.g., 25²: 2 * (2+1) = 6, then append 25 -> 625.

Nikhilam Navatashcaramam Dashatah

All from 9 and last from 10. Useful for subtraction from base (10, 100, 1000).

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Vedic Maths & Fast Calculation

Expert Answer & Key Takeaways

Ekadhikena Purvena (One more than previous)

Nikhilam Navatashcaramam Dashatah

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