Worked examples
Two examples
Example 1
A train goes 60 miles per hour. How many feet per second is that?
- 60 miles × 5,280 feet per mile = 316,800 feet per hour.
- An hour is 3,600 seconds: 316,800 ÷ 3,600 = 88.
Answer: 88 feet per second
Example 2
A job pays $15 an hour. How much is that per minute?
- An hour is 60 minutes: 15 ÷ 60 = 0.25.
Answer: $0.25 per minute
Where this is taught: Quiz 26: Units and Conversions, “The chain”
The drill
Ten problems
How many:
Type each answer, then press Check my answers at the bottom. Commas in large numbers are fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.