Integer Subtraction: From Basics to Advanced Challenges

This video tutorial explains how to subtract integers, covering various scenarios such as subtracting a positive number from a negative number, a negative number from another negative number, and a negative number from a positive number. The key rule is to change the subtraction problem into an addition problem by adding the opposite, known as the additive inverse. The tutorial also includes a challenge problem involving the subtraction of three negative numbers, emphasizing the importance of subtracting from left to right and handling one pair of numbers at a time.

What is the rule for subtracting integers?

• Change subtraction to division

• Change subtraction to subtraction again

• Change subtraction to addition by using the additive inverse

• Change subtraction to multiplication

When subtracting -12 and -10, what is the result?

• +22

• +2

• -2

• -22

How do you handle subtraction when both integers have the same sign?

• Add the numbers and keep the sign

• Subtract the numbers and change the sign

• Multiply the numbers and keep the sign

• Divide the numbers and change the sign

In the challenge problem, what is the result of subtracting -1, -7, and -20?

• -6

• +6

• -26

• +26

What is the first step when subtracting multiple pairs of numbers?

• Subtract from left to right

• Subtract from right to left

• Add all numbers together

• Multiply all numbers