Final answer:
To find out how many decimeters are in a 5-kilometer race, convert 5 kilometers to 5000 meters and then to 50000 decimeters by multiplying by 10.
Step-by-step explanation:
The question is how many decimeters Gabrielle will run in a 5-kilometer race. To solve this, we need to understand the metric unit conversions involved. There are 1000 meters in a kilometer and 10 decimeters in a meter. To convert kilometers to decimeters, we will multiply 5 kilometers by 1000 to get meters, and then multiply again by 10 to get decimeters.
- Convert kilometers to meters: 5 km × 1000 = 5000 meters
- Convert meters to decimeters: 5000 m × 10 = 50000 decimeters
Therefore, Gabrielle will run 50000 decimeters in a 5-kilometer race.