Number Names 1 to 20

Number names 1 to 20 represent numbers from 1 to 20 written in words. These are foundational to early math learning and essential for developing number sense. While numbers 1 to 10 are usually easier to memorize, the number names from 11 to 20 often require more attention and repeated practice.

Let’s understand how to write 1 to 20 in words, use charts for memorization, explore examples, and learn some tips for easy retention.

Quick Answer: Here are the number names 1 to 20 in English.

Number	Number Name
1	One
2	Two
3	Three
4	Four
5	Five
6	Six
7	Seven
8	Eight
9	Nine
10	Ten
11	Eleven
12	Twelve
13	Thirteen
14	Fourteen
15	Fifteen
16	Sixteen
17	Seventeen
18	Eighteen
19	Nineteen
20	Twenty

Table of Contents

• What Are Number Names 1 to 20?
• Download Free 1 to 20 Number Names Chart
• Number Names 11 to 20
• Solved Examples of Numbers 1 to 20
• Practice Questions of Numbers 1 to 20
• Real-Life Applications
• Free Downloadable PDF Worksheet on Number Names 1 to 20
• Frequently Asked Questions on Number Names 1 to 20

 

What Are Number Names 1 to 20?

Number names from 1 to 20 are the spellings of the numbers in English. For example:

• 1 is written as One

• 9 is written as Nine

• 15 is written as Fifteen

Learning these number names helps children build a strong math and language foundation. They’re widely used in classrooms, books, and everyday communication.

Download Free 1 to 20 Number Names Chart

Download Free Number Names 1 to 20 PDF Chart

Number Names 11 to 20

Number	Number Name
11	Eleven
12	Twelve
13	Thirteen
14	Fourteen
15	Fifteen
16	Sixteen
17	Seventeen
18	Eighteen
19	Nineteen
20	Twenty

Rules to Write Number Names from 1 to 20

• Numbers 1–9: Learn these as basic sight words: one, two, three, four, five, six, seven, eight, nine. There's no shortcut here; they simply need to be memorised first, since every later number name builds on them.
• Numbers 10, 11 and 12: Ten, eleven and twelve don't follow any pattern either, so they're best learnt together as their own small set, purely by sound and sight.
• Numbers 13–19: Take the number name of the ones digit and add 'teen' to the end of it. For example, four + teen = fourteen, and six + teen = sixteen. (Thirteen bends this very slightly, swapping 'three' for 'thir' before adding 'teen'.)
• Number 20: Twenty breaks away from 'teen' and ends in 'ty' instead. It's the same pattern that every multiple of ten will follow later, from thirty all the way to ninety.

Solved Examples of Numbers 1 to 20

Example 1: Write the number name for 14.
Solution: 14 = Fourteen

Example 2: Convert the number name Fifteen into its numerical form.
Solution: Fifteen = 15

Example 3: Which number names end with the suffix 'teen'?
Solution: The number names ending with the suffix 'teen' are Thirteen, Fourteen, Fifteen, Sixteen, Seventeen, Eighteen, and Nineteen.

Example 4: Write 20 in words
Solution: 20 = Twenty

Example 5: Write 7 in words.
Solution: 7 = Seven

Practice Questions of Numbers 1 to 20

1. Write the number name for 5.
2. Write the numeral for Eleven.
3. What is the number name of 13?
4. Write the numeral for Nineteen.
5. Fill in the blank: 16 = S I X T _ E N
6. Fill in the blank: 14 = F O U R T _ E N
7. What comes after Seventeen? Write its number name.
8. What comes before Ten? Write its number name.
9. Write the number names from 16 to 20.
10. Arrange the following number names in ascending order: Twelve, Four, Eighteen, Nine.
    
    

Real-Life Applications

• Writing dates, quantities, and money amounts in words

• Filling school forms and homework

• Reading storybooks and games involving counting

• Building vocabulary alongside numerical understanding
  
  

Free Downloadable PDF Worksheet on Number Names 1 to 20

Download and print this worksheet to practice number names from 1 to 20.

Number Names 1 to 20 Worksheet

Start learning today at Orchids The International School and build a strong foundation in numbers and words!