The whole, from a percentage of it

Difficulty Stretch · Set m4l4qt

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1
80% of a number is 896. What is the number?
2
10% of a number is 32. What is the number?
3
10% of a number is 4. What is the number?
4
40% of a number is 152. What is the number?
5
20% of a number is 136. What is the number?
6
20% of a number is 164. What is the number?
7
80% of a number is 176. What is the number?
8
20% of a number is 28. What is the number?
9
20% of a number is 104. What is the number?
10
75% of a number is 180. What is the number?
11
75% of a number is 585. What is the number?
12
60% of a number is 228. What is the number?
13
40% of a number is 24. What is the number?
14
20% of a number is 104. What is the number?
15
10% of a number is 84. What is the number?
16
75% of a number is 615. What is the number?
17
80% of a number is 832. What is the number?
18
10% of a number is 48. What is the number?
19
60% of a number is 252. What is the number?
20
75% of a number is 105. What is the number?

What is in this set

The numbers in this set run from 4 to 944.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 100% of the problems: the percentage was taken again.
Answers are a whole number.

Drawing 240 problems from this page produced 184 different ones, 77% — 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 7 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.