Commonly used quantities include lakh (one hundred thousand) and crore (ten million) – written as 1,00,000 and 1,00,00,000 respectively in some locales.
These include arab (100 crore, 1 billion), kharab (100 arab, 100 billion), nil or sometimes transliterated as neel (100 kharab, 10 trillion), padma (100 nil, 1 quadrillion), shankh (100 padma, 100 quadrillion), and mahashankh (100 shankh, 10 quintillion).
These names respectively starting at 1000 are sahasra, ayuta, laksha, niyuta, koti, arbhudha, abhja, karva, nikarva, mahapadma, shanmkhu, jaladhi, amtya, madhya, paraardha.
The Indian system groups digits of a large decimal representation differently than the US and other English-speaking regions.
Some Western numbering systems use a comma for decimal separator and a thin space or point to group digits.
[3] When speakers of indigenous Indian languages are speaking English, the pronunciations may be closer to their mother tongue; e.g. "lakh" and "crore" might be pronounced /lɑkʰ/, /kɑrɔːr/, respectively.
The table below includes the spelling and pronunciation of numbers in various Indian languages along with corresponding short scale names.