Grade 5

After allowing students a few minutes to think about the problem, ask them to share their ideas. Encourage them to record their suggestions using expressions with variables.

Fran takes *S *steps when she walks a mile. How can you estimate the length of her step in feet? In inches?

- You need to know how many feet are in a mile (and how many inches are in a foot).
- There are 5,280 feet in a mile, so divide 5,280 by
*S*to estimate the length of Fran’s step in feet: (5,280 ÷*S*). - Multiply that answer by 12 (since there are 12 inches in a foot) to estimate the length in inches.
- You could also start with the number of inches in a mile (5,280 × 12 = 63,630) and divide that by
*S*to find the length of Fran’s step in inches: 63,630 ÷*S*.

This work is licensed under a

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.