Not to worry — here’s a quick breakdown of how to write numbers in words on a check. Check Out: 3 Things You Must Do When Your Savings Reach $50,000. Rules for Writing Numbers in Words on a Check.

Hyphenate all numbers under 100 that need more than one word. For example, $73 is written as “seventy-three,” and the words for $43.50 are “Forty-three and 50/100.” ...