Mastering Integer Subtraction with Hands-On Techniques

This video tutorial explains how to subtract integers using the 'keep change change' method. It provides examples and models the process with visual aids like buttons to represent positive and negative values. The tutorial also covers the mathematical rules for subtracting integers, emphasizing the importance of identifying same or different signs and applying the appropriate operations.

What is the first step in the 'keep change change' rule?

• Keep the first number the same

• Change the first number

• Change the second number

• Keep the second number the same

In the example 4 - (-5), what does the expression become after applying 'keep change change'?

• 4 - (-5)

• 4 - 5

• 4 + (-5)

• 4 + 5

How many yellow buttons represent positive 4 in the first example?

• 5

• 4

• 9

• 0

In the example -4 - 7, what does the expression become after applying 'keep change change'?

• -4 - (-7)

• -4 + (-7)

• -4 - 7

• -4 + 7

How many red buttons represent negative 7 in the second example?

• 0

• 4

• 7

• 11

In the example 9 - 12, what does the expression become after applying 'keep change change'?

• 9 + (-12)

• 9 - (-12)

• 9 - 12

• 9 + 12

How many yellow buttons represent positive 9 in the third example?

• 3

• 0

• 9

• 12

What is the result of 9 - 12 after modeling with buttons?

• Positive 3

• Positive 12

• Negative 3

• Negative 12

What should you do if the signs are the same after applying 'keep change change'?

• Subtract the numbers and keep the same sign

• Add the numbers and keep the same sign

• Subtract the numbers and change the sign

• Add the numbers and change the sign

What should you do if the signs are different after applying 'keep change change'?

• Add the numbers and keep the same sign

• Subtract the numbers and keep the same sign

• Add the numbers and change the sign

• Subtract the numbers and take the sign of the bigger number