# Uses of number lines

- Skip counting
- Add whole numbers by counting forward
- Subtract whole numbers by counting backward
- Subtract whole numbers by counting forward
- Add integers
- Subtract integers
- Multiply a fraction by a whole number
- Multiply a fraction by a fraction
- Multiplication as repeated addition
- Division as repeated subtraction
- Multiply an integer by an integer
- Divide an integer by an integer
- Ordering fractions