Which is a better estimate for the volume of a plastic cup? 20 pints   20tablespoons

The better estimate for the volume of a plastic cup would be 20 tablespoons.

Here's why:

1. Understand the units: A pint is a larger unit of volume, typically used for larger quantities of liquid, like a jug of milk. A tablespoon is a smaller unit of volume, typically used for smaller quantities of liquid, like a dose of medicine.

2. Compare with the object: A plastic cup is a relatively small container. It's larger than a tablespoon, but much smaller than a pint.

3. Make an estimate: Given the size of a plastic cup, it's unlikely to hold 20 pints of liquid. That's more than a gallon! On the other hand, it could reasonably hold 20 tablespoons of liquid.

So, 20 tablespoons is a better estimate for the volume of a plastic cup.