To read big numbers in English, the key steps are:
- Identify the commas and their place values from right to left: thousand, million, billion, etc.
- Read each group of up to three digits between commas separately (e.g., hundreds, tens, and ones within each group).
- Combine the groups by naming each with its place value: for example, million, thousand.
- Use singular forms (e.g., "million" not "millions") and usually say the largest group first.
- Use "and" to connect hundreds and tens within groups (mainly in British English), but not between thousands and millions.
- Examples:
- 82,456,201 is read as "eighty-two million, four hundred fifty-six thousand, two hundred and one."
- 1,345,612 is read as "one million, three hundred and forty-five thousand, six hundred and twelve."
- For very large numbers, you can build up from billions, millions, thousands, to hundreds, reading each group in order.
This method makes even extremely large numbers manageable and clear to read aloud in English.