Understanding Number Opposites

The video tutorial explores the concept of number opposites using a number line. It begins with an introduction to the exercise on Khan Academy, followed by an analysis of point B and its relationship to other points like D and E. The tutorial further examines the properties of zero as an opposite and concludes with additional practice to reinforce understanding. The key takeaway is understanding how opposites are positioned on a number line and the unique property of zero being its own opposite.

What is the opposite of a number on a number line?

• A number to the left of zero

• A number to the right of zero

• A number at the same position

• A number at the opposite position relative to zero

If point B is one hash mark to the left of zero, what is its opposite?

• Point E

• Point D

• Point C

• Point A

Why is point B not the opposite of point E?

• Because E is three hash marks to the right of zero

• Because E is to the left of zero

• Because B is at zero

• Because B is three hash marks to the right of zero

Which statement is true about zero?

• Zero is equal to negative zero

• Zero is always positive

• Zero is not equal to negative zero

• Zero is always negative

What can be said about the opposite of the opposite of a number?

• It is always zero

• It is the same as the original number

• It is always negative

• It is always positive