series of conversions
- How many seconds in a year?
converting powers of units
- How many liters in 1 cubic foot of water?
converting compound units
- The speed of light is 2.9979 X 108 m/s. What’s that in miles per hour?
starting point must be constructed
- How many gallons of water will fill a 20 ft by 30 ft rectangular swimming pool to a depth of 6 ft?