Nancy is running on a trail that’s 5.3 miles long. After 20 minutes, she has run 1.45 miles. Write an addition to fine how much farther Nancy has to run to complete the trail.
The Correct Answer and Explanation is :
To find out how much farther Nancy has to run to complete the 5.3-mile trail, we can perform a simple subtraction.
- Total Distance of the Trail: 5.3 miles
- Distance Already Run by Nancy: 1.45 miles
To find out how much farther she has to run, we subtract the distance she has already run from the total distance of the trail:
[
\text{Distance Remaining} = \text{Total Distance} – \text{Distance Already Run}
]
Plugging in the values:
[
\text{Distance Remaining} = 5.3 \text{ miles} – 1.45 \text{ miles}
]
To perform the subtraction, it helps to convert the numbers into a format that is easy to work with. We can align them as follows:
- 5.3 can be converted to 5.30 (to make the decimal places align).
- 1.45 is already in a suitable format.
Now, we can perform the subtraction:
[
5.30 – 1.45 = 3.85
]
Thus, the distance remaining for Nancy to complete the trail is 3.85 miles.
Explanation
Nancy is on a trail that measures 5.3 miles in total. After running for 20 minutes, she has covered 1.45 miles. To determine how much farther she needs to run, we simply subtract the distance she has already run from the total distance of the trail.
Subtraction in this context helps us find the remaining distance, which is essential for pacing herself and planning her run. Knowing how much distance is left allows Nancy to manage her energy levels effectively, especially if she has a target time or a goal for her run.
This calculation is straightforward but crucial for any runner looking to track their progress. It emphasizes the importance of understanding distances in training and recreational running, ensuring that they can prepare adequately for completing their run or race without underestimating the effort required for the remaining distance. Thus, Nancy has 3.85 miles left to finish her trail run.