Rethinking Subtraction as Addition: Using the Additive Inverse

This lesson teaches how to rethink subtraction problems as addition problems using the additive inverse. It begins with a review of integers and explains common mistakes in subtracting integers. The lesson then demonstrates how to use the additive inverse on a number line to solve subtraction problems, providing examples to illustrate the concept. Finally, it addresses more complex subtraction problems, showing how to convert them into addition problems using the additive inverse.

What is the definition of integers as mentioned in the lesson?

Explain the concept of subtraction and how it relates to addition.

What mistake do people commonly make when subtracting integers?

How can you visualize the subtraction problem 8 - 3 on a number line?

What is the additive inverse and how is it used in subtraction problems?

Describe the process of converting a subtraction problem into an addition problem using the additive inverse.

What is the result of the subtraction problem -2 - (-9) and how is it derived?