Q: Why are commas used in large numbers?

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Commas are used to separate large numbers into groups of three digits. Each group is called a period.

It is a stupid question

Commas are used to separate large numbers into groups of three digits. Each group is called a period.

In large numbers, a comma precedes every third number (counting from right to left). So, 3000000 should be written as 3,000,000.

46,000,304 -- commas are not necessary

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Yes.

Commas are used to separate large numbers into groups of three digits. Each group is called a period.

In many countries, they are used to break up large numbers into smaller strings: of three or two digits to make them easier to read.

The commas between numbers in place value are commas.

It is a stupid question

Decimal places are used in mathematics for the same reasons that commas are used. Decimal places are used to break up large numbers in order to make them easier to read.

They break down very large numbers into groups of 3 from right to left thus making them easy to read as for example 30,000,000,000 is thirty billion

In representing large numbers, English texts use commas (or spaces) to separate each group of three digits. This is almost always done for numbers of six or more digits, and optionally for five (or even four) digits. This makes it easier to read the number without having to count how many place holders there are in the number as a whole.

Commas should not be used to separate the numbers in a person's height. The number in feet should be followed by an apostrophe and the number in inches should be followed by a quotation mark.

Using commas in the metric system can lead to confusion, as commas are used as decimal points in some countries while periods are used in others. To maintain consistency and avoid errors, it is best to follow the standard convention of using periods as decimal points in the metric system.

50.000 is: cincuenta mil in Spanish. Commas are not used to separate numbers.