Math Checkup: Convert Feet and Inches to Decimal Feet
Converting feet and inch measurements to decimal feet is essential for performing calculations. In this process you will need to remember how to:
- Convert a fraction to a decimal by using division, and
- Convert inches to feet by dividing by 12.
Example Convert Feet and Inches to Decimal Feet
Convert 7’ – 9 ½” to decimal feet.
| What I am calculating… | What I am thinking… |
| Convert the fraction of an inch to a decimal of an inch by dividing. “Top divide bottom plus the whole number.” Your calculator should read what’s in blue. | |
| This number is a decimal of an inch. Convert it to a decimal of a foot by dividing by 12. | |
| Add the whole number of feet. |
Examples: Convert Feet and Inches to Decimal Feet
In the next examples, if there is no fraction of an inch, just divide the whole inches by 12. If there are no feet, they do not need to be added.
Try these questions. The answer key follows