Answer:
They have a 0 in the ones place
Step-by-step explanation:
Because you start with 10, you will always have a 0 at the end.
30, 90, 270, etc.
The first number will be 500
the second number will be 600
and the last number will be 990
Is 125 because u need to take the 5 and add 3 on the top