Lesson Steps:

Step 1: Add the units digits, i.e., 3 + 0 = 3
Step 2: Add the tens digits, i.e., 0 + 2 = 2
Since there are no digits in the hundreds and thousands places, we conclude.

        27,803

           +20

        27,823

Answer:

27,823

Grade: 5
Level: Primary
Subject: Math
Topic: Addition