Bhaskara II wrote Siddhanta Shiromani at the age of 36 in 1150 AD. This colossal work is divided into four parts Lilawati, Beejaganit, Ganitadhyaya and Goladhyaya and consists of about 1450 verses. Each part of the book consists of huge number of verses and can be considered as a separate book: Lilawati has 278, Beejaganit has 213, Ganitadhyaya has 451 and Goladhyaya has 501 verses. He formulated simple ways of calculations from Arithmetic to Astronomy in this book. He wrote Lilawati is an excellent lucid and poetic language. It has been translated in various languages throughout the world.

**Few important contributions of BhaskarII to mathematics are as follows:**

**Terms for numbers**

In English, the multiples of 1000 are termed as thousand, million, billion, trillion, quadrillion etc. These terms were named recently in English, but Bhaskaracharya gave the terms for numbers in multiples of ten which are as follows: eka(1), dasha(10), shata(100), sahastra(1000), ayuta(10,000), laksha(100,000), prayuta (1,000,000=million), koti(107), arbuda(108), abja(109=billion), kharva (1010), nikharva (1011), mahapadma (1012=trillion), shanku(1013), jaladhi(1014), antya(1015=quadrillion), Madhya (1016) and parardha(1017).

**Kuttak**

Kuttak according to modern mathematics is 'indeterminate equation of first order'. In the western world, the method of solving such equations was called as 'pulverizer'. Bhaskara suggested a generalized solution to get multiple answers for these equations.

**Chakrawaal**

Chakrawaal, according to western mathematics is the "indeterminate equation of second order". It is also called Pell's equation. The equation was first solved by an ancient Indian mathematician, Brahmagupta (628 AD) and given in his Brahmasphutasiddhanta. Bhaskara II converted the method and gave a generalized solution.

**Simple mathematical methods**

Bhaskara II suggested simple methods to calculate the squares, square roots, cube, and cube roots of big numbers. The Pythagoras theorem was proved by him in only two lines. Bhaskara's 'Khandameru'is the famous Pascal Triangle. Pascal, the European mathematician was born 500 years after Bhaskara. In Lilawati, he solved several problems on permutations and combinations and called the method as 'ankapaash'. He even gave an approximate value of PI as 22/7, which is 3.1416. He was even familiar with the concept of infinity and called it as 'khahar rashi', which means 'anant'.

He died in 1185 in Ujjain, India Last Updated on : January 30, 2014