Importance of commas or periods

Place value chart

Importance of commas or periods.

Numbers having 4 or more digits can be read quickly and easily by putting them into groups using commas.

In the place value system, ones, tens and hundreds form the first group under “ones” period. Thousands and ten thousands form second group under “thousands” period, lakhs and ten lakhs form the third group under “lakhs” period and crores and ten crores form the fourth group under “crores” period. Each group is seperated by a comma.

1. 99,15,797

2. 2,30,145

3. 1,34,19,922