These are useful all throughout the Calculator test, along with the Math and Number Sense tests as well. It is best to have most of these conversions memorized. Although they are not asked for directly, these equations are necessary to complete many types of problems.
1 inch = 2.54 cm.
1 mile = 5280 ft.
1 sq. mile = 640 acres
1 acre = 43560 sq. ft.
1 acre = 4840 sq. yds.
1 teaspoon (tsp) = 1/6 oz.
1 tablespoon (tbsp) = 1/2 oz.
1 cup = 8 oz.
1 pint = 16 oz.
1 quart = 32 oz.
1 half gallon = 64 oz.
1 gallon = 128 oz.
1 cubic foot = 7.481 gallons (approx.)
1 liter = 1.0567 quarts (approx.)
1 pound = 16 oz.
1 pound = 453.59237 grams
1 ounce = 28.3495231 grams
Radius of the Earth = 3960 miles
Degrees Celsius = (Degrees Fahrenheit - 32 degrees)/9 = Kelvin - 273.15
