Understanding Integer Operations and Subtraction

This video tutorial for grade seven students covers lesson five in module two, focusing on subtracting integers and other rational numbers. The lesson begins with a review of adding integers and introduces a card game to illustrate integer subtraction. The tutorial explains how selecting and discarding cards affect scores, emphasizing the concept of subtraction as the addition of the additive inverse. The lesson concludes with practical applications and a summary of key concepts, encouraging students to practice using a regular deck of cards.

What is the first step in subtracting integers with different signs?

• Add their absolute values.

• Subtract their absolute values.

• Divide their absolute values.

• Multiply their absolute values.

In the integer card game, what color represents negative numbers?

• Green

• Blue

• Red

• Black

What happens to your score when you select a positive card?

• It remains the same.

• It decreases by the card's value.

• It increases by the card's value.

• It doubles.

How does discarding a negative card affect your score?

• The score remains unchanged.

• The score increases by the card's value.

• The score is halved.

• The score decreases by the card's value.

What operation does selecting a card represent in the integer card game?

• Division

• Addition

• Multiplication

• Subtraction

What is the equivalent of subtracting a positive integer?

• Adding a positive integer

• Multiplying by a negative integer

• Subtracting a negative integer

• Adding a negative integer

How can you rewrite the expression 8 - 2 using addition?

• 8 - (-2)

• 8 * 2

• 8 + (-2)

• 8 + 2

What is the result of 11 minus negative 8?

• 19

• -19

• 3

• 11

What is the difference in elevation between an airplane at 25,000 feet and a submarine at 600 feet below sea level?

• 24,600 feet

• 25,600 feet

• 25,400 feet

• 24,400 feet

What is the rule of subtraction in terms of addition?

• Subtracting a number is the same as adding its inverse.

• Subtracting a number is the same as multiplying by its inverse.

• Subtracting a number is the same as dividing by its inverse.

• Subtracting a number is the same as subtracting its inverse.