Commas and numbers – Exercise 2

Add or remove commas where necessary. If a sentence is already correct, you can rewrite it unchanged or simply type Correct. Click Check Answer to check your work.

About This Rule

• In numbers of four or more digits, use commas to separate groups of three digits, counting from the right: 1,234,567. For four-digit numbers, the comma is often optional (1,234 or 1234).
• Do not use commas in years (1776), page numbers (page 1234) or street addresses (12345 Elm Street).
• Use a comma between the day and the year in a date: July 4, 1776.
• Use a comma to separate related parts of a reference, such as act 2, scene 3 or page 10, line 5. With measurements such as five feet, four inches, the comma is traditional, but many style guides now omit it.

More Practice

• Commas and numbers – Exercise 1
• Commas and numbers – Exercise 3
• How to Use a Comma in English: Master All 15 Rules
• All Writing Mechanics topics