Class 6 Maths Knowing Our Numbers Using Commas

Using Commas

Commas are used while reading and writing large numbers. In Indian System of Numeration, Commas are used to mark thousands, lakhs and crores.

• The first comma comes after hundreds place (three digits from the right) and marks thousands.
• The second comma comes two digits later (five digits from the right). It comes after ten thousands place and marks lakh.
• The third comma comes after another two digits (seven digits from the right). It comes after ten lakh place and marks crore.

For eg. 68537954 can be written as 6,85,37,954.

 Problem: Read the numbers. Write them using placement boxes and put commas according to Indian and International System of Numeration. Number Indian Numeration International Numeration Number Name 527864 5,27,864 527,864 INDIAN: Five Lakh Twenty Seven Thousand Eight Hundred Sixty Four INTERNATIONAL: Five Hundred Twenty Seven Thousand Eight Hundred Sixty Four 95432 95,432 95,432 Ninety Five Thousand Four Hundred Thirty two (same in both numeration systems) 18950049 1,89,50,049 18,950,049 INDIAN: One Crore Eighty Nine Lakh Fifty Thousand Forty Nine INTERNATIONAL: Eighteen Million Nine Hundred Fifty Thousand Forty Nine 70002509 7,00,02,509 70,002,509 INDIAN: Seven Crore Two Thousand Five Hundred Nine INTERNATIONAL: Seventy Million Two Thousand Five Hundred Nine

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