The whole, from a percentage of it

Difficulty Standard · Set 6khgkd

Fill in what you can and press Check. Nothing you type is sent anywhere.

1
80% of a number is 224. What is the number?
2
20% of a number is 60. What is the number?
3
25% of a number is 150. What is the number?
4
75% of a number is 390. What is the number?
5
25% of a number is 30. What is the number?
6
50% of a number is 290. What is the number?
7
40% of a number is 104. What is the number?
8
75% of a number is 150. What is the number?
9
20% of a number is 36. What is the number?
10
40% of a number is 56. What is the number?
11
60% of a number is 96. What is the number?
12
20% of a number is 32. What is the number?
13
25% of a number is 80. What is the number?
14
75% of a number is 360. What is the number?
15
25% of a number is 95. What is the number?
16
10% of a number is 26. What is the number?
17
80% of a number is 224. What is the number?
18
75% of a number is 225. What is the number?
19
75% of a number is 75. What is the number?
20
10% of a number is 14. What is the number?

What is in this set

The numbers in this set run from 4 to 480.
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 145 different ones, 60% — 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.