To order quart, pint, gallon, liter, and cup from least to greatest, we first need to standardize their approximate sizes. Here’s how they rank based on their volume:
- Cup (8 fluid ounces)
- Pint (16 fluid ounces or 2 cups)
- Quart (32 fluid ounces or 2 pints)
- Liter (~33.8 fluid ounces, slightly larger than a quart)
- Gallon (128 fluid ounces or 4 quarts)
Final Order: Cup < Pint < Quart < Liter < Gallon
This ranking applies primarily to the US customary system, where these units are most commonly used. Liters, however, are part of the metric system, and their equivalence may vary slightly depending on context.