Part 1/6:

Understanding Subtraction Through Contextualized Problems

In this lesson, we will explore how to solve contextualized subtraction problems involving natural numbers. The approach will be guided by structured steps to enhance understanding and retention.

The First Example: The Journey from Rio to São Paulo

The first problem presents a scenario involving a road trip. A driver is traveling from Rio de Janeiro to São Paulo, covering an approximate distance of 440 kilometers. After an hour and a half of travel, the driver has already covered 120 kilometers. The challenge is to determine how many kilometers remain before reaching São Paulo.