The mean

Difficulty Starter · Set w2aebr

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1
What is the mean of 14, 9, 20, 13?
2
What is the mean of 5, 3, 7, 9?
3
What is the mean of 13, 8, 18, 5?
4
What is the mean of 17, 20, 5, 14?
5
What is the mean of 14, 2, 16, 12?
6
What is the mean of 6, 13, 4, 17?
7
What is the mean of 5, 10, 5, 4?
8
What is the mean of 6, 19, 13, 14?
9
What is the mean of 19, 19, 14, 4?
10
What is the mean of 4, 13, 15, 20?
11
What is the mean of 11, 3, 16, 18?
12
What is the mean of 7, 17, 12, 20?
13
What is the mean of 15, 18, 7, 8?
14
What is the mean of 12, 7, 17, 12?
15
What is the mean of 17, 5, 20, 18?
16
What is the mean of 12, 6, 2, 12?
17
What is the mean of 7, 15, 6, 8?
18
What is the mean of 14, 4, 16, 14?
19
What is the mean of 6, 10, 20, 16?
20
What is the mean of 20, 19, 20, 9?

What is in this set

The numbers in this set run from 2 to 20.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 77% of the problems: that is the middle value once they are sorted — the mean is the total shared out evenly.
Answers are a whole number.

Drawing 240 problems from this page produced 239 different ones, 100% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 5 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.

Next to this

The median

Numbers 2–20; every one will have an even number of values, so the median is a midpoint.

Finding a missing value from the mean

Numbers 1–36.

All of averages and range

7 skills in this topic, 21 sets between them.

Printing it

The printed sheet carries no menus and no advertising, and the answer key is on its own page.