To find out how many cups are in four gallons, we can use multiplication since there are 16 cups in one gallon.
Here are the correct expressions from the provided options:
- 4 × 16 (This means 4 gallons times 16 cups.)
- 16 × 4 (This is the same as 4 × 16, just reordered.)
- 16 + 16 + 16 + 16 (This is adding 16 cups four times, which is the same as multiplying.)
The incorrect options would be:
- 16 + 4 (This does not correctly represent the total number of cups in four gallons.)
- 16 ÷ 4 (This does not apply to finding the total number of cups in four gallons.)
So the three expressions that apply are:
- 4 × 16
- 16 × 4
- 16 + 16 + 16 + 16