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.

When to Use a Hyphen: eContent Pro

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Hyphen vs Dash: How to Pick the Right One

Why do people say 'age is just a number' or 'age is just a figure'? What's wrong with saying your age? Why should we hide our ages from others? - Quora

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