first of all there are many free online conversions to figure this question out. Secondly, the answer depends on how you want to approach the question and what information you already have. I'll assume you know how many ounces in a cup, cups in a pint, pints in a quart and quarts in a gallon. if you knew how many ounces in a cup and how many cups in a gallon you could skip steps.
you can multiply how many ounces in a cup by how many cups in a pint, then multiply that answer by how many pints in a quart, then multiply that answer by how many quarts in a gallon.
conversely you could divide a gallon by the number of quarts in a gallon, divide that answer by the number of pints in a quart, divide that answer by the number of cups in a pint and divide that answer by the number of ounces in a cup. This will give you a fraction. The recipricol of that fraction is the number of ounces in a gallon.
adding and subtracting would be nothing more than a convoluted way of explaining the multiplication or division of the problem.
divide
Divide
You would multiply pounds by the ounces per pound.
it is inches-feet pounds-ounces multiply divide numerator subtract-add that,s all the fact that you should know and spell
A pound is equal to eight ounces, so you would multiply the number of pounds by eight to convert it to ounces.
Multiply
divide
Very easy. There are 128 fluid ounces in one gallon. Therefore, simply multiply gallons by 128 to get fluid ounces. In this case:15.8 x 128 = 2,022.4 fluid ounces.
Divide
You would multiply pounds by the ounces per pound.
it is inches-feet pounds-ounces multiply divide numerator subtract-add that,s all the fact that you should know and spell
When changing ounces to pounds, you divide by 16. Example: 112 ounces in pounds. Divide 112 by 16 and you will get 7, so the answer is 7 pounds.
A pound is equal to eight ounces, so you would multiply the number of pounds by eight to convert it to ounces.
Did you mean 1 and 1/4 gallons? Or did you mean 1 gallon + 4 gallons? I'll answer both ways: A gallon has 128 fluid ounces. So if the question is 1 and 1/4 gallons, you divide the 128 ounces by 4, which is 32 ounces. You then add 32 + 128, which = 160 fluid ounces. If your question is how many fluid ounces in 1 gallon + 4 gallons, you simply multiply 5 x 128, which = 640 fluid ounces.
You may multiply by 0.25, or divide by 4. The result is the same- cups to quarts.
There are 128 ounces in 1 gallon. There are 4 quarts in a gallon. Divide 128 by 4 and you get 32. So there are are 32 ounces in 1 quart. Multiply 32 ounces by 2 quarts and you get 64 ounces in 2 quarts total.
A half gallon has 64 fluid ounces total, so to divide it into 4-ounce servings, you would divide 64/4. So there are 16 servings