Question

The Calorie used on food labels is equal to how many calories?

Answer 1

1000

Explanation:

The food Calorie (capital "C") is actually a kilocalorie (`1 xx 10^3` calories)!

Why would someone do this? Well, probably because it takes about 2 megacalories (`2 xx 10^6`) to run a person for a day. So it is more convenient to talk about 2,000 Calories than it is to talk about 2 million calories.