Worked examples
Two examples
Example 1
3.5 hours = ? minutes
- 1 hour = 60 minutes. 3.5 × 60 = 210.
Answer: 210 minutes
Example 2
A shift starts at 7:45 a.m. and ends at 4:15 p.m. How long is it?
- From 7:45 a.m. to 3:45 p.m. is 8 hours.
- From 3:45 to 4:15 is 30 more minutes.
Answer: 8 hours 30 minutes
Where this is taught: Quiz 26: Units and Conversions, “The conversions on this page”
The drill
Ten problems
This drill also has challenge problems. They use the same skill, set up the way the GED test sometimes sets up a problem, so that it looks new at first.
How many:
Type the number only; the unit is already there. For a length of time, type the hours and then the minutes, like 8 h 30 min. Then press Check my answers at the bottom.Write your answer on the line, or circle it. The answer key, with the reasoning, is on the last page.