Spelling guides

Deep dives on the rules behind writing numbers in words — one page per topic.

• Spelling Money Amounts
  Learn how to write dollar and cent amounts in words for US checks, contracts, and legal documents — with rules for 'and 00/100 dollars' and examples from $1 to $1,000,000.
• Writing Numbers on a Check
  Step-by-step guide to writing numbers in words on a US bank check, including cents as NN/100, where to place 'and', and real check-writing examples.
• Ordinal Numbers
  Complete guide to spelling ordinal numbers from 1st (first) to 100th (one hundredth), including irregulars like fifth, eighth, ninth, twelfth, and twentieth.
• Writing Dates in Words
  How to write dates and years like 'April 23, 2026' or 'July 4, 1776' in full English words for wedding invitations, diplomas, and legal contracts.
• Saying Phone Numbers in Words
  Learn how to pronounce and spell out US phone numbers, area codes, and toll-free 1-800 numbers digit by digit in English.
• Spelling Fractions
  Learn how to spell fractions in English words by combining a cardinal numerator with an ordinal denominator — plus when to hyphenate fractions.
• Spelling Decimal Numbers
  How to read and write decimal numbers like 3.14, 0.5, and 0.005 in English words — both digit-by-digit after 'point' and by tenths/hundredths.
• Spelling Negative Numbers
  Learn how to write and pronounce negative numbers like -1, -47, and -100 in English using 'negative' for math/finance and 'minus' for temperatures.
• Million, Billion, Trillion, and Beyond
  Learn the short-scale names and spellings for large numbers in English — million, billion, trillion, quadrillion, quintillion, and how to chunk 3-digit groups.