Place Value

Units, thousands, millions too,
I’m place value,
What I do?
Put ten digits,
In their places,
Ones, tens, hundreds,
In their spaces!

Thousands, millions, billions too,
I’m place value,
I’ll tell you,
Periods,
Have three slots,
Ones, tens, hundreds,
Few or lots!

Millions, billions, trillions too,
I’m place value,
What I do?
Value digits,
Big or small,
So you know,
Where they fall...