The unusual corners of mathematics: Vedic shortcuts, Roman numerals, number bases and clock arithmetic.
Other benefits:
Boost Memory Mind Sharpness Strong Mind Smart Mathematician Rare Maths
Roman to digits, up to 100
Digits to Roman, up to 1000
Read the date off the credits
The full range to 3,999
Read binary numbers
Write binary numbers
Base sixteen, the colour-code base
Base eight and mixed conversions
The easiest sutra to learn
25², 35², 85² instantly
Nikhilam: multiply using deficits
Two-digit multiplication in one line
The rules everyone knows
The digit-sum tests
The last-two-digits family
Alternating digit sums
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