3.2 and 3.3 Conversion Problems More Calculations!

Metric Conversion Practice 7.246 kg to decigrams Answer: 72460 or 7.246 X 104 dg 35.2 km to meters Answer: 35200 or 3.52 X 104 m 24.80mL to daL Answer: 0.002480 or 2.480 X 10-3 daL

Domino Activity Always start with zero on the bottom Match numbers diagonally until you reach the number on the bag Switch bags with another group and try again

Dimensional Analysis - Converting from one unit to another…uses a… Definitions Dimensional Analysis - Converting from one unit to another…uses a… Conversion Factor - Ratio of Equivalent Measurements Changes the numerical value, but not the size of the quantity

Steps List Unknown (?= _) Make a list of knowns (dominoes) Write down the number and unit you’re starting with Use knowns to match units diagonally until you’re left with the needed unit(s)

Practice. Convert 3,549 seconds to years Answer: 0.0001125 or 1.125 X 10-4 years Convert 15.0 miles to inches (hint: there are 5280 ft in a mile) Answer: 9.50 X 105 inches Convert 320 kPa to mm Hg Answer: 2400 or 2.4 X 103 mm Hg

Practice Convert 3.458 calories to Joules. Answer: 14.47 J Convert 0.8320 Joules to calories. Answer: 0.1988 cal

Helpful Conversions 1 mL = 1 cm3 5280 ft = 1 mi 1 ton = 2000 lbs. 1 mi = 1.609 km **See section 3.2 for more!

Converting TWO Units Pick the top or bottom to start with and complete those steps before moving onto the other. Example: I can drink 3 Liters of milk per day. If there are 4 quarts per liter, how many quarts per week is that? Answer: 84 qts/wk.

More Practice Convert 45 mi per hr to km per s (there is 1 mi in 1.609 km) Answer: 0.020 or 2.0 X 10-2 km/s 52.80 kL per hour to mL per second Answer: 14,670 or 1.467 X 104 mL/s