**Lesson Steps**:

There are two numbers with two digits each.

Units digit of 10 : 0

Tens digit of 10 : 1

Add the units digits of both numbers : 0 + 0 = 0

Add the tens digits of both numbers : 1 + 1 = 2

Combine the tens digit and units digit to get the answer: 20.

**Answer**:

20

**Subject**: Math

**Topic**: Addition