How can you tell when a pattern shows counting on by tens face

The digits in the tens place increase by one from each number to the next.

Step-by-step explanation:

When you count by tens, all the numbers end in zero. For example, if you are counting,"ten, twenty, thirty, ...," the numbers are

10

20

30

40

etc.

The digits in the tens place increase by 1 from each number to the next.

This is the same as in ordinary counting: 1, 2, 3, 4, ...

That's the pattern.