Numbers 1-100 in English

Basic Number System

Numbers 1-100 follow a structured pattern in English:

• 1-10: One, Two, Three, ..., Ten
• 11-19: Eleven, Twelve, ..., Nineteen
• 20-99: Twenty, Twenty-one, ..., Ninety-nine
• 100: One hundred

Mathematical Relationships

English Learning Tips

• Memory technique: Group numbers by tens (e.g., 21-30)
• Special cases: 15 (fifteen), 30 (thirty), 50 (fifty)
• Plural form: Add "-s" for most numbers (e.g., 1 apple → 2 apples)

Key Resources

For further study see:

• English Grammar for Learners (Oxford Press, 2021)
• Mathematics Vocabulary Guide (Cambridge University, 2019)