When Should Ages Be Hyphenated? The Years-Old Question

Are you looking after a six-year-old, or a six year old? Knowing when to hyphenate ages can be tricky, but not impossible. Learn how to know the difference here.

Years Old: Hyphen or No Hyphen?

How to Use (or Not Use) a Hyphen

Are Numbers Hyphenated When Written Out? - BusinessWritingBlog

image.slidesharecdn.com/checklistfor0-3yearsoldchi

Punctuation YourDictionary

After-t Definition & Meaning

Old Dominion Definition & Meaning

Compound Adjectives Exercises - Word Classes Worksheet

Hyphened Definition & Meaning

When to hyphenate age?

Hyphenated Words: Usage, Rules, and Examples