Writing numbers in word form means expressing a number using words instead of digits. It shows the value of each part of the number using place value words such as “hundred,” “thousand,” and “million.”
Writing numbers in words helps you understand the number’s value and place value more clearly.
To write a whole number in word form, break it into periods (groups of three digits), then write each group with the correct place value name.
Do not use “and” when writing whole numbers. “And” is used only when writing decimals or mixed numbers.
Each digit in a number has a value based on its position. Place value names include ones, tens, hundreds, thousands, ten thousands, hundred thousands, millions, and so on.
When reading large numbers, say each group clearly. For example, 7,204,015 is read as “seven million two hundred four thousand fifteen.”
Large numbers are written in word form by grouping digits into periods of three and naming each period (thousands, millions, billions, etc.).
Write numbers in a clear, consistent way. Use hyphens for compound numbers between 21 and 99 (for example, “thirty-seven”).
After writing a number in words, read it back aloud to make sure it matches the original number. Each place value should sound correct and complete.
If the number sounds incorrect when read aloud, recheck your place value and the spelling of each word.