Systems of Measurement: example 1.143

How many ounces are in 1 gallon?

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

How many cups are in 1 gallon?

How did it go?

	1 gallon
Multiply the measurement to be converted by 1.	$\frac{1 gallon}{1} \cdot \frac{4 quarts}{1 gallon} \cdot \frac{2 pints}{1 quart} \cdot \frac{2 cups}{1 pint} \cdot \frac{8 ounces}{1 cup}$
Use conversion factors to get to the right unit. Simplify.
Multiply.	$\frac{1 \cdot 4 \cdot 2 \cdot 2 \cdot 8 ounces}{1 \cdot 1 \cdot 1 \cdot 1 \cdot 1}$
Simplify.	$128 ounces$ There are 128 ounces in a gallon.

	1 gallon
Multiply the measurement to be converted by 1.	$\frac{1 gallon}{1} \cdot \frac{4 quarts}{1 gallon} \cdot \frac{2 pints}{1 quart} \cdot \frac{2 cups}{1 pint} \cdot \frac{8 ounces}{1 cup}$
Use conversion factors to get to the right unit. Simplify.
Multiply.	$\frac{1 \cdot 4 \cdot 2 \cdot 2 \cdot 8 ounces}{1 \cdot 1 \cdot 1 \cdot 1 \cdot 1}$
Simplify.	$128 ounces$ There are 128 ounces in a gallon.