2. Unit Conversions use fractions/ratios to change the units of measurement We “cross-cancel” units Units are common factors on top and bottom Use Formula Sheet We keep canceling until we are left with the units we want and then we multiply the fractions Example: Convert 5 cookies to cookies day week 5 cookies 1 day 7 day 1 week Cookies per week

3. Convert ½ hour to minutes 1 hour 2 60 min 1 hour minutes Convert 15 inches to feet 15 in 1 1 ft 12 in ft ÷3 Convert 64 ounces to pounds 64 oz 1 1 lb 16 oz ÷16 lb

4. Convert 20 quarts to gallons 20 qt 1 1 gal 4 qt gal Convert 12 cups to pints 12 cups 1 1 pint 2 cups = 12 2 = 6 pints

5. Convert 50 inches to yards 50 in 1 1 ft 12 in Convert 45 cups to quarts 45 cups 1 1 pints 2 cups 1 quart 2 pints 1 yd 3 ft = 50 1 1 1 12 3 = 50 36 = = 45 1 1 1 2 2 = 45 4 =

6. Convert 200 feet per minute to miles per hour 200 ft 1 min 1 mile 5280 ft 60 min 1 hour = = = 200 1 60 1 5280 2 12,000 10,560 1.136 miles per hour