Writing Numbers and Dates Correctly

What You Will Learn

You'll master writing numbers and dates the way native English speakers do. This is essential for emails, job applications, WhatsApp messages, and filling out forms.

Explanation

English has specific rules for numbers and dates that can confuse learners. Let's break it down:

Numbers 0-9: Write them as words (zero, one, two, three...)
Numbers 10-99: Write them as words (twenty, forty-five, ninety-nine)
Numbers 100+: Write as numbers (100, 500, 1,000)

But here's the real rule: In formal writing (emails, letters), spell out numbers below 10. Use digits for larger numbers. In casual texts, you can use digits.

Dates are trickier because formats differ:
- American: Month/Day/Year → December 25, 2024 or 12/25/2024
- British/International: Day/Month/Year → 25 December 2024 or 25/12/2024

For safety, always write the month as a word: "25 December 2024" works everywhere!

Examples

Job application email: "I have five years of experience and can start on January 15, 2025."

WhatsApp to friend: "Let's meet at 3pm tomorrow? I'll bring 2 coffees."

Form (hotel booking): "Checking in on 14 March for 3 nights."

Birthday invitation: "Saturday, June 8th at four o'clock."

Common Mistakes

❌ "I have 3 cats" (formal writing) → ✅ "I have three cats"

❌ "the 5 of May" → ✅ "May 5th" or "5 May"

❌ "2024/12/25" (confusing!) → ✅ "25 December 2024" (clear everywhere)

❌ "four o clock" → ✅ "four o'clock" (needs apostrophe)

Quick Tips

• For emails and formal writing: Spell out numbers one through nine
• For dates: Use the pattern "Day Month Year" — it's internationally understood
• For time: Always use the apostrophe in "o'clock"
• On forms: Check the country's preference (US uses 12/25/2024, UK uses 25/12/2024)
• In doubt? Write the month as a word — "December 25" never confuses anyone