Subtracting Integers: Key Concepts and Techniques

The video tutorial explains how to subtract integers by converting the subtraction into an addition problem. It covers the concept of integers, including positive and negative numbers, and provides four examples to illustrate the process. The key rule is to add the opposite of the second number, making it easier to apply the rules for adding integers. The tutorial aims to simplify the understanding of integer subtraction by focusing on addition.

Which of the following numbers is NOT an integer?

• 4

• 2.5

• 0

• -3

What is the first step in subtracting two integers?

• Ignore the negative sign

• Add the two numbers directly

• Change the subtraction to addition

• Change the first number to its opposite

Why is it easier to work with addition rather than subtraction?

• Addition is always positive

• Subtraction is not a valid operation

• Addition rules are simpler

• Our minds work better with addition

What is the opposite of 8?

• 0

• -8

• -1

• 8

What is the result of 5 + (-8)?

• 3

• -3

• -13

• 13

What is the opposite of -4?

• -1

• 0

• 4

• -4

What is the result of 15 + 4?

• 21

• 19

• 11

• 9

What is the result of (-32) + (-7)?

• 25

• -25

• -39

• 39

What is the opposite of -3?

• -3

• 3

• 0

• -1

What is the result of -21 + 3?

• -18

• -24

• 18

• 24