Additive Inverses and Integer Operations

This video tutorial teaches how to convert subtraction problems into addition problems using the additive inverse. It begins with an introduction to integers and common mistakes in subtraction. Through examples like 8 - 3, 7 - 13, and -2 - (-9), the tutorial demonstrates using the additive inverse and number lines to solve these problems. The lesson concludes by reinforcing the concept of turning any subtraction problem into an addition problem.

What is an integer?

• A number greater than zero

• A number with a decimal

• A positive or negative whole number, including zero

• A fraction

What is a common mistake when subtracting integers?

• Adding the numbers first

• Dividing the numbers

• Subtracting without considering the sign

• Multiplying the numbers

How can subtraction be rethought as an addition problem?

• By using the additive inverse

• By multiplying the numbers

• By dividing the numbers

• By ignoring the signs

What is the result of 8 - 3 using the additive inverse?

• 3

• 2

• 5

• 11

What is the additive inverse of 3?

• 6

• -3

• 3

• 0

What is the result of 7 - 13 using the additive inverse?

• 20

• -6

• 6

• -20

What is the additive inverse of 13?

• 0

• -13

• 26

• 13

What is the result of 15 + (-6)?

• 21

• -21

• -9

• 9

What is the result of -2 - (-9) using the additive inverse?

• 11

• -11

• 7

• -7

What is the additive inverse of -9?

• 0

• -9

• 9

• 18