This activity is about reading two-digit numbers correctly.
The left digit tells you how many tens, like twenty, thirty, forty, fifty....etc.
The right digit tells you how many ones.
When the tens digit is 1, we have numbers like thirteen, fourteen, fifteen...etc....
When the tens digit is bigger than 1, we use twenty-, thirty-, forty-, etc....
We put a hyphen or dash between two number words, unless the tens digit is 1.
Examples
17 seventeen
38 thirty-eight
49 forty-nine
80 eighty
Shall we have a go at some questions now?