Expanding a single bracket

Difficulty Starter · Set 5i81kl

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

1
Expand2(2x+6)— give the number of x.
2
Expand3(2x+3)— give the number of x.
3
Expand2(3x+6)— give the number of x.
4
Expand4(2x+8)— give the number of x.
5
Expand3(3x+4)— give the number of x.
6
Expand5(4x+5)— give the number of x.
7
Expand3(3x+7)— give the number of x.
8
Expand4(2x+3)— give the number of x.
9
Expand4(3x+6)— give the number of x.
10
Expand2(3x+3)— give the number of x.
11
Expand2(5x+2)— give the number of x.
12
Expand3(5x+3)— give the number of x.
13
Expand5(4x+4)— give the number of x.
14
Expand2(3x+4)— give the number of x.
15
Expand4(4x+6)— give the number of x.
16
Expand5(2x+2)— give the number of x.
17
Expand2(2x+2)— give the number of x.
18
Expand4(4x+7)— give the number of x.
19
Expand4(2x+8)— give the number of x.
20
Expand2(2x+2)— give the number of x.

What is in this set

The numbers in this set run from 2 to 8.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 100% of the problems: only the 4 was multiplied by 5.
Answers are a whole number.

Drawing 240 problems from this page produced 105 different ones, 44% — so a sheet of 20 will come back to a problem you have seen — there are only so many sensible ones of this kind.

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.