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.
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.
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Only when you are listing should you use commas between adjectives. Hope this helped :)
No, commas are generally not used with or. For example, you might say I will eat an orange or an apple with my meal. You would not say I will eat an orange, or an apple with my meal. However, commas are intended to reflect the rhythm of speech, and if a person speaks hesitantly, you might need to use extra commas to reflect that.
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Commas are typically used to separate elements in an address such as the street, city, state, and zip code. For example, in the address "123 Main Street, Anytown, CA 12345," commas are used to separate the street, city, and state elements.
Inverted commas at the beginning and end of the speech. Inverted commas can be either single ' or double ".
Commas are used to show the division. They can be used to differentiate two word syllables.
not set apart with commas
Parentheses are used in a sentence to capture a note relating to the wording of the sentence. Dashes and commas set apart words in a sentence.
Commas can be used in direct quotations to separate two complete thoughts or elements within the quotation. For example: "I am tired," she said, "and I need some rest."