Worked examples
Two examples
Example 1
What is the mean of 4, 8, 6, 10, 7?
- Add them: 35.
- Divide by how many there are, 5: 35 ÷ 5.
Answer: 7
Example 2
What is the mean of 72, 85, 90, 81?
- 72 + 85 + 90 + 81 = 328.
- 328 ÷ 4 = 82.
Answer: 82
Where this is taught: Quiz 28: Mean, Median, Mode, and Range, “The mean: the fair share”
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 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.