Vedic Mathematics is based on the ancient Indian teachings which discuss mathematical working and reasoning. It is fast and easy to learn. A few of them will be discussed here:
Value of Pi in Vedas - Until the invention of computers,mathematicians couldn't calculate the value of pi upto 16 digits accurately. But translation of Vedic verse in 10th book of RigVeda,which appears to be written for praise of Lord Indra, gives the value of Pi upto 32 digits...
Pythagorus Theorem in Vedas - Pythagoras theorem is wellknown fundamental theorem of Euclidean geometry for right angles triangles, which is discussed in Baudhāyana Sulvasūtra, written centuries before Pythagorus(6th century BCE)