Final answer:
To calculate the calories received from carbohydrates in a food product, multiply the total grams of carbohydrates by 4, which is the average number of calories per gram for carbohydrates. For a product with 10 grams of carbohydrates, this results in 40 calories from carbohydrates.
Step-by-step explanation:
When calculating the number of calories from carbohydrates on a Nutrition Facts label that lists total carbohydrate as 10 grams, with sugars being 5 grams, it is important to consider the average caloric content for carbohydrates. According to the Atwater system, the average number of calories from carbohydrates is 4 calories per gram. Therefore, to find the caloric content from the total carbohydrates, you would multiply the total grams listed (10 grams) by the average calories per gram for carbohydrates.
10 grams of carbohydrates x 4 calories/gram = 40 calories
This means you receive 40 calories from the carbohydrates listed on the Nutrition Facts label.