The world of Vedic maths, says Tekriwal, is mental - doing away with finger counting, carrying over digits, manual calculations and electronic computations.
Vedic math, as contained in the Atharva Veda, the last of the four Vedas, is on a revival path after several thousand years. Schools in various Asian nations, Europe and America are falling back on ancient Indian scriptures to crack complex number games that make up present-day mathematics.
But Tekriwal says it is more popular abroad than in India. "It is recognized by the National Council of Education Research and Training but is yet to become part of the scholastic curriculum in the country," he said.
This when mathematics is a weak link for millions of school children across India. The subject seems either too dry or as being loaded with numbers.
"The premise is simple. Break down complex numbers into their components of 10s or 100s and calculate mentally. For example, when 38 is added to 46 in conventional math, we carry over one and add it to the top-most digit in the column representing 10 (in the Indian decimal system). The result is 84.
"But in Vedic math, we break down the number into its decimal components. First, we add 30 and 40, the sum of which is 70. And then add 8 and 6, which is 14. The zero stays and one adds strength to the cardinal number in the bigger decimal column. Hence, 7 becomes 8. The end result is 84," Tekriwal explained, citing an example.
The mathematician has designed several puzzles and intelligent mind games for first-timers in Vedic classrooms.
Vedic math, interpreted in the modern context in 1965 by seer Bharati Krisna Thirthaji Maharaja in his book "Vedic Mathematics", has 16 "sutras" (formulas) and 13 sub-sutras (smaller theorems) to solve the entire gamut of mathematical problems mentally in less than one-tenth of the time taken to solve them through conventional methods.
In a live demonstration, Tekriwal added two sets of 24-digit numbers down to its last decimal point in less than five seconds, without a word. "It comes with practice," he said.
The Vedic math expert, who used the technique to solve his mathematical problems in his IIM entrance test (CAT), has designed modules for students trying to crack the IIT and IIMas well as bank jobs and IAS examinations.
In the Quant section of the CAT, you can save loads of time in the areas of data interpretation and number systems. Vedic Maths gives a student a clear understanding of number systems and the way to solve loads of question paper in less time.
You can also apply Vedic Maths in stock markets to calculate arbitrage, profit on buy and sell and estimating percentages.