Putting a number through a rule

Difficulty Standard · Set xt3x5t

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1
A rule turns x into 2x + 7. What does it turn 2 into?
2
A rule turns x into 3x + 5. What does it turn 6 into?
3
A rule turns x into 4x + 11. What does it turn 2 into?
4
A rule turns x into 3x + 2. What does it turn 3 into?
5
A rule turns x into 3x + 3. What does it turn 7 into?
6
A rule turns x into 4x + 5. What does it turn 5 into?
7
A rule turns x into 2x + 4. What does it turn 5 into?
8
A rule turns x into 2x + 2. What does it turn 3 into?
9
A rule turns x into 4x + 10. What does it turn 7 into?
10
A rule turns x into 2x + 12. What does it turn 2 into?
11
A rule turns x into 3x + 5. What does it turn 6 into?
12
A rule turns x into 2x + 2. What does it turn 7 into?
13
A rule turns x into 4x + 1. What does it turn 4 into?
14
A rule turns x into 3x + 3. What does it turn 3 into?
15
A rule turns x into 3x + 3. What does it turn 7 into?
16
A rule turns x into 4x + 4. What does it turn 2 into?
17
A rule turns x into 2x + 14. What does it turn 7 into?
18
A rule turns x into 2x + 13. What does it turn 7 into?
19
A rule turns x into 3x + 13. What does it turn 5 into?
20
A rule turns x into 2x + 1. What does it turn 6 into?

What is in this set

The numbers in this set run from 1 to 14.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 100% of the problems: the 11 was added before the multiplication.
Answers are a whole number.

Drawing 240 problems from this page produced 156 different ones, 65% — 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 6 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.