Writing Numbers in Word Form
Writing a number in word form means expressing it entirely in words rather than numerals. It is used on cheques, legal documents, and formal writing – and it tests whether you truly understand the structure of a number.
Rules for Writing Numbers in Word Form
- Read the number from left to right in groups (periods).
- Name each group followed by its period name (thousand, million, etc.).
- Within each group, read hundreds first, then tens and ones.
- Use a hyphen between tens and ones (twenty-three, not twenty three).
- Use "and" to separate hundreds from tens/ones in British English.
- Do not include commas in word form.
Ones and Teens – Special Words
| Numeral | Word Form | Numeral | Word Form |
|---|---|---|---|
| 1 | one | 11 | eleven |
| 2 | two | 12 | twelve |
| 3 | three | 13 | thirteen |
| 4 | four | 14 | fourteen |
| 5 | five | 15 | fifteen |
| 6 | six | 16 | sixteen |
| 7 | seven | 17 | seventeen |
| 8 | eight | 18 | eighteen |
| 9 | nine | 19 | nineteen |
| 10 | ten | 20 | twenty |
Tens Words
| Numeral | Word | Numeral | Word |
|---|---|---|---|
| 20 | twenty | 60 | sixty |
| 30 | thirty | 70 | seventy |
| 40 | forty | 80 | eighty |
| 50 | fifty | 90 | ninety |
Worked Examples
| Standard Form | Word Form |
|---|---|
| 47 | forty-seven |
| 305 | three hundred and five |
| 6,018 | six thousand and eighteen |
| 74,200 | seventy-four thousand, two hundred |
| 3,000,042 | three million and forty-two |
Word Form Back to Standard
Nine hundred thousand, five hundred and sixty-two → 900,562
Key Points
- Read numbers in periods from left to right and name each period.
- Hyphenate compound tens and ones: thirty-seven, not thirty seven.
- Teens (11–19) have unique names; memorise them.
- Forty (not fourty) and twelve (not twoteen) are common spelling traps.
- Zeros within a number are not written out in word form.
Quick Practice
- Write 813 in word form.
- Write 40,009 in word form.
- Convert "two million, three hundred thousand and fifteen" to standard form.
- Which is correct: "fourty-two" or "forty-two"?
- Write 1,000,000,000 in word form.
Summary
Word form is the written-language version of a number. It requires you to know both the place value structure of numbers and the correct English words for each period and position. With practice, converting between word form and standard form becomes quick and instinctive.