What number is it?
It's fifteen.
What number is it?
It's eleven.
What number is it?
It's thirteen.
13 + 1 = ?
14
10 + 1 = ?
11
11 + 2 = ?
13 / thirteen
9 + 1 = ?
10 / ten
14 + 1 = ?
15
What number is it?
It's fourteen.