⏰ Numbers and Telling Time

Learning numbers is the first step to talking about prices, ages, and schedules!

Numbers 0-10	Numbers 11-20	Tens (30, 40, etc.)
0 - zero	11 - eleven	30 - thirty
1 - one	12 - twelve	40 - forty
2 - two	13 - thirteen	50 - fifty
3 - three	14 - fourteen	60 - sixty
4 - four	15 - fifteen	70 - seventy
5 - five	16 - sixteen	80 - eighty
6 - six	17 - seventeen	90 - ninety
7 - seven	18 - eighteen	100 - one hundred
8 - eight	19 - nineteen
9 - nine	20 - twenty
10 - ten

Tip: For numbers like 21, 35, 99, we always use a hyphen: **twenty-one, thirty-five, ninety-nine.**

For sequences of numbers (like phone numbers, account numbers, and years), we usually read them individually. In **British English**, the number **0 (zero)** is often said as the letter **'O' or 'oh'**. When two consecutive numbers are the same, we often say **"double"** (e.g., 993 is **nine nine three** OR **double nine three**). With years, 1974 is nineteen seventy-four, 2005 is two thousand and five, 2025 is two thousand and twenty-five or twenty twenty-five.

In everyday English, we use the 12-hour clock (with **a.m.** for morning and **p.m.** for afternoon/evening). We usually say the time by using a few key phrases:

• **On the hour (XX:00):** Use **o'clock**. (e.g., 5:00 → **five o'clock**)
• **At 30 minutes (XX:30):** Use **half past**. (e.g., 8:30 → **half past eight**)
• **At 15 minutes (XX:15):** Use **quarter past**. (e.g., 2:15 → **quarter past two**)
• **At 45 minutes (XX:45):** Use **quarter to** the next hour. (e.g., 6:45 → **quarter to seven**)