Number-Word Puzzle — Spell Out Numbers
Given a number, type it spelled out in words. Score points for speed and accuracy.
How to play
- A number appears — type it out in words (e.g. 42 → forty-two).
- Use hyphens for compound numbers like thirty-seven.
- Hundreds: '500' = 'five hundred'; thousands: '1000' = 'one thousand'.
- Click Hint to reveal the first few letters of the answer.
- Score as many as you can in 90 seconds!
A number appears on screen — type it out in words as fast as you can! Numbers get bigger as you score. 90 seconds on the clock. Can you spell 'one thousand three hundred forty-two'?
How it works
The Number-Word Puzzle shows you a numeral — for example 47 or 1,250 — and asks you to type its full written-out English equivalent, such as 'forty-seven' or 'one thousand two hundred fifty'. Points are awarded for each correct answer, with a speed bonus for answering quickly.
This skill matters in professional writing, cheque writing, legal documents, and formal correspondence where numerals must be spelled out. The puzzle trains you to handle hyphens, compound forms, and the distinction between hundreds, thousands, and millions.
Each round consists of a set of questions covering a range of magnitudes, from simple single-digit numbers up to multi-digit values in the thousands. Answers are checked for exact correctness including hyphenation, so 'forty seven' (missing hyphen) may be marked differently from 'forty-seven'.
The puzzle is especially useful for students learning English number words, non-native speakers, or anyone who regularly writes formal documents and wants to build speed and confidence with number notation conventions.
Worked examples
Writing a two-digit number
- The puzzle shows: 63
- Recall the tens word: sixty.
- Add the units word with a hyphen: sixty-three.
- Type 'sixty-three' and submit.
Correct. The hyphen between tens and units is required for all two-digit numbers from 21 to 99.
Writing a four-digit number
- The puzzle shows: 3,408
- Break it down: three thousand, four hundred, eight.
- Note there is no tens digit, so no tens word is needed.
- Type 'three thousand four hundred eight' and submit.
Correct. The word 'and' before the final digits is optional in American English but may be expected in British English.
Common mistakes to avoid
- Forgetting hyphens in compound numbers between 21 and 99, e.g. writing 'thirty five' instead of 'thirty-five'.
- Adding unnecessary words, such as writing 'one hundred and fifty' when the expected form is 'one hundred fifty'.
- Confusing 'hundred' and 'thousand' place values when a number crosses both, e.g. miswriting 2,500 as 'twenty-five hundred' rather than 'two thousand five hundred'.
Key terms
- Compound number
- A two-digit number from 21 to 99 whose written form joins the tens and units words with a hyphen, e.g. twenty-one.
- Place value
- The value of a digit based on its position, such as hundreds, thousands, or millions.
- Speed bonus
- Extra points awarded for submitting a correct answer within a short time window.
Frequently asked questions
- Does hyphenation matter?
- Yes — twenty-one is correct; twentyone is not. Hyphens between tens and units are required.
- How are thousands formatted?
- Example: 1,234 = 'one thousand two hundred thirty-four'. No 'and' is required.