Answer
a.) 0.5 gal
b.) 78 inches
Work Step by Step
a.) 2 qt = 1/2 gal or 0.5 gal
You are converting from a smaller unit to a larger unit (a quart is smaller than a gallon) so divide.
Because 4 qt = 1 gal, divide by 4.
2 qt= 2/4 gal = 1/2 gal =0.5 gal
b.) 6 1/2 ft = 78 inches
You are converting from a larger unit to a smaller unit (a foot is longer than an inch), so multiply.
Because 1 ft = 12 in., multiply by 12.
6 1/2 ft = 13/2 * 12/1 = 78 inches