3
Number words to 20
Learner’s Book 1: Unit 9, p. 122
GoalSay, read and write the number words from eleven to twenty.
New words
number word · a number written in lettersteen · sounds like tentwenty · the word for 20
Explanation
Every number has a name that we can write in letters. 11 is eleven and 12 is twelve. Then the names end with teen, which sounds like ten. 13 is thirteen, 14 is fourteen and 15 is fifteen. Thirteen starts like three, but we say ‘thir’. After nineteen, 20 is twenty. Say each number out loud and then write its word. Look carefully at the letters.
| number | word |
|---|---|
| 11 | eleven |
| 12 | twelve |
| 13 | thirteen |
| 14 | fourteen |
| 15 | fifteen |
| 16 | sixteen |
| 17 | seventeen |
| 18 | eighteen |
| 19 | nineteen |
| 20 | twenty |
Worked examples
| number | word |
|---|---|
| 17 | seventeen |
16 is sixteen: ‘six’ and ‘teen’. 18 is eighteen: ‘eigh’ and ‘teen’.
After nineteen comes twenty. Twenty is 20.
Class activity
Word cards: write the numbers 11 to 20 on cards, and the words on other cards. Mix them up. Match each number to its word. Time yourself, then try again to be faster.
Practice
1
Write 11 in words.
eleven
2
Which number is fourteen?
14
3
Write the missing word.
| number | word |
|---|---|
| 11 | eleven |
| 12 | ? |
| 13 | thirteen |
twelve
4
Write the number nineteen with digits.
19