Combining Opposites on a Number Line

This video tutorial teaches how to make zero by combining opposite numbers on a number line. It explains the concept of positive and negative directions on both horizontal and vertical number lines. Real-life examples, such as walking distances and diving, illustrate how opposite numbers work. The lesson concludes with advanced concepts, showing that starting from zero is not always necessary to understand opposites.

What does a positive sign indicate on a number line?

• Moving to the left

• Moving to the right

• Staying at zero

• Moving in a circle

If James walks four miles to school and then returns home, how many total miles does he walk?

• Eight miles

• Six miles

• Four miles

• Zero miles

How do opposite numbers combine on a number line?

• They add up to a negative number

• They combine to make zero

• They add up to a positive number

• They multiply to make zero

In the example of the diver, what does swimming back to the surface represent?

• Moving horizontally

• Staying at the same depth

• Moving in a positive direction

• Moving in a negative direction

If your house is two miles from a park and the school is four miles in the opposite direction, how far do you walk to get to school from your house?

• Six miles

• Four miles

• Eight miles

• Two miles