To find how many cups are in four gallons, you can use the fact that there are 16 cups in one gallon.
So, to find the total number of cups in four gallons, you can use multiplication:
- 16 × 4 (This means 16 cups per gallon times 4 gallons)
- 4 × 16 (This is the same calculation as above, just the order is switched.)
You can also add 16 four times:
- 16 + 16 + 16 + 16 (This is the same as 4 groups of 16 cups.)
The expressions that apply are:
- 16 × 4
- 4 × 16
- 16 + 16 + 16 + 16
The expressions 16 ÷ 4 and 16 + 4 do not describe how many cups are in four gallons. Therefore, the correct answers are:
- 16 × 4
- 4 × 16
- 16 + 16 + 16 + 16