Converting to different units of measure.
Convert 12 feet into yards.
12 ft = 4 yds
1 yd = 3 ft
and multiplying by 1 does not change the value (property of real numbers).
the ft cancel to give answer in yds.
How to determine what is numerator and denominator.
What if we had
Does not give us the answer in yards because the ft do not cancel.
40miles/hr into feet/min
1 mi = 5280 ft 1 hr = 60 min
Do one step at a time:
40 mi/hr x 5280 ft/mi = 40x5280ft/hr
= 3520 ft/min
How many feet will a car travel in 2 minutes if the car is going 40 mi/hr?
3520 ft/min x 2 min = 7040 ft.
Conversions are needed to change US standard system into the Metric system.
1 meter = 39.37 inches
1 kilometer = 1000 meters
1 kilometer = ? inches = 39370 inches
1 kilogram = 1000 grams
1 kilogram = ? lbs = 2.2046 lbs
Note: ever wonder why lbs represent pounds? ( The Latin word libras means stones used for measuring weight on scales)