Reasonableness of Answers Using Rounding

The video tutorial explains the importance of estimation in everyday situations like shopping and time management. It uses a math problem involving Devon to demonstrate how to check the reasonableness of an answer through rounding. The process of rounding numbers to the nearest hundred is detailed, and the tutorial concludes by verifying Devon's corrected answer, emphasizing the usefulness of estimation in math.

After rounding, what is the estimated sum of 428 and 291?

What did Devon's final answer of 719 indicate about his estimation?