Question

Joe filled a 10-cup watering can with water. He then poured some of the water on his tomato plants.

How can Joe find out how much water he used for his tomato plants?

Answer 1

By using a measuring cup. This would help him find the amount of water left in the can, which then the amount of cups would be subtracted from 10.

Answer 2

He can find how much water he has left after watering his plants, and subtract it by how much he started with.