Subtracting real numbers a negative from a positive, 11 - (-2)

The video addresses common student questions about negative numbers and explains the concept of additive inverse. It demonstrates how subtraction can be rewritten as addition using the additive inverse, and uses a number line to visually represent this process. The goal is to encourage students to think critically and understand the underlying mathematical principles rather than just seeking answers.

Why does the teacher dislike when students ask if subtracting a negative number results in a positive or negative number?

• Because the answer is always negative.

• Because students should think through the problem.

• Because it's a complex question.

• Because it requires advanced math skills.

What mathematical concept does the teacher use to explain subtraction?

• Multiplicative identity

• Commutative property

• Distributive property

• Additive inverse

How can the subtraction of a negative number be rewritten?

• As the multiplication of a negative number

• As the addition of a positive number

• As the division of a positive number

• As the subtraction of a positive number

In the example given, what is the result of 11 minus negative 2?

• 13

• 11

• 15

• 9

What tool does the teacher use to visually explain the concept of subtracting a negative number?

• A pie chart

• A number line

• A calculator

• A graph