The heart algorithm that is popular all over the world, Indian mathematics quick calculation. Indian mathematical quick calculation, a popular mental method all over the world, is the Vedas of ancient Indian Buddhism. It does not follow the usual path, and combines divergent thinking, reverse thinking and other creative thinking to invent its own unique operation method. The operation speed is much faster than the usual operation method, and it is praised by European scientists as "the fastest and most accurate operation method except computer", so it is also called "the second Vedic algorithm". The secret of this operation lies in the application of reverse algorithm and complement algorithm. It aims to teach learners to jump out of habitual thinking, cultivate learners' leaping thinking, and give learners the teaching intuition of "looking at formulas" and "giving answers in seconds"