Writing numbers up to 100 in words
key notes :
| ✨ Key Points: |
Numbers can be written in two ways:
- In figures (digits) → Example: 25
- In words → Example: Twenty-five
Numbers from 1 to 20 have special names:
- 1 → One
- 2 → Two
- 3 → Three
- …
- 10 → Ten
- 11 → Eleven
- 12 → Twelve
- …
- 20 → Twenty
Tens (30, 40, 50 … 100) have special names too:
- 30 → Thirty
- 40 → Forty
- 50 → Fifty
- 60 → Sixty
- 70 → Seventy
- 80 → Eighty
- 90 → Ninety
- 100 → One hundred
Numbers between tens are written as:
- Tens word + Ones word
- Example:
- 21 → Twenty-one
- 36 → Thirty-six
- 49 → Forty-nine
- 58 → Fifty-eight
- 72 → Seventy-two
Hyphen (-) is used between the tens and ones for numbers 21–99 (except multiples of ten).
- Example:
- 64 → Sixty-four
- 87 → Eighty-seven
| 📝 Examples: |
- 15 → Fifteen
- 27 → Twenty-seven
- 34 → Thirty-four
- 48 → Forty-eight
- 99 → Ninety-nine
- 100 → One hundred
| 🎯 Practice Activity: |
Write the following in words:
- 23 = __________
- 56 = __________
- 89 = __________
- 100 = __________
Match the numbers with words:
| Number | Word |
|---|---|
| 42 | Fifty-one |
| 67 | Forty-two |
| 51 | Sixty-seven |
Learn with an example
➡️ How do you write this number using words?
31
- thirty-seven
- eleven
- seventeen
- thirty-one
Remember how to write numbers from 21 to 99.
First, write the tens part. Then, put a hyphen and write the ones part. If there is no ones part, only write the tens part.
You write 31 as thirty-one.
➡️ How do you write this number using digits?
fifty
- 10
- 5
- 80
- 50
Remember how to write numbers from 21 to 99.
You write fifty as 50.
How do you write this number using words?
19
- nine
- eleven
- nineteen
- fifteen
Remember how to write numbers from 11 to 20.
11 eleven
12 twelve
13 thirteen
14 fourteen
15 fifteen
16 sixteen
17 seventeen
18 eighteen
19 nineteen
20 twenty
You write 19 as nineteen.
let’s practice!
