Understanding Distance & Coordinates

Find Distances on a Number Line

Work Time

Find Distances on a Number Line

  • Use the Number Line Tool to model each subtraction problem as a distance on a number line. Write the difference as an equation.
    • 17 − 3
    • 3 − 15
    • −7 − (−9)
    • 1 − (−5)
  • Create a problem in the form: positive number – negative number = 7

  • Create another problem in the form: positive number – negative number = 7

  • How do the number lines for the two problems you created compare? What is similar and what is different? Explain.

INTERACTIVE: Number Line Tool

Hint:

A distance is always a positive number. So, how can you determine whether the answer to the subtraction problem is positive or negative?