The mean

Difficulty Stretch · Set s04cqh

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1
What is the mean of 3, 109, 99, 102, 57, 49, 78?
2
What is the mean of 119, 101, 41, 44, 11, 46, 16?
3
What is the mean of 75, 116, 109, 20, 80, 84, 104?
4
What is the mean of 76, 18, 68, 108, 43, 79, 84?
5
What is the mean of 71, 61, 115, 59, 13, 114, 22?
6
What is the mean of 15, 58, 64, 48, 88, 24, 109?
7
What is the mean of 82, 81, 94, 86, 38, 92, 52?
8
What is the mean of 3, 73, 55, 97, 99, 57, 92?
9
What is the mean of 46, 42, 118, 101, 53, 118, 47?
10
What is the mean of 7, 117, 13, 22, 22, 77, 106?
11
What is the mean of 96, 110, 64, 88, 99, 91, 54?
12
What is the mean of 38, 36, 53, 43, 45, 26, 25?
13
What is the mean of 116, 78, 20, 86, 88, 116, 84?
14
What is the mean of 120, 2, 27, 74, 118, 14, 93?
15
What is the mean of 87, 3, 42, 44, 94, 16, 8?
16
What is the mean of 34, 69, 100, 70, 82, 46, 47?
17
What is the mean of 90, 72, 18, 2, 120, 100, 109?
18
What is the mean of 94, 23, 24, 77, 56, 115, 108?
19
What is the mean of 67, 76, 72, 10, 56, 91, 104?
20
What is the mean of 51, 99, 34, 63, 109, 73, 12?

What is in this set

The numbers in this set run from 2 to 120.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 95% 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 240 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 2–120.

Finding a missing value from the mean

Numbers 1–40.

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.