## 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?