Writing an expression from words

Difficulty Stretch · Set oquele

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1
Write this as an expression, with n first: 14 less than n.
2
Write this as an expression, with x first: 12 less than x.
3
Write this as an expression, with x first: 17 less than x.
4
Write this as an expression, with k first: 11 less than k.
5
Write this as an expression, with n first: 14 times n.
6
Write this as an expression, with x first: 13 times x.
7
Write this as an expression, with x first: 8 times x.
8
Write this as an expression, with k first: 13 more than k.
9
Write this as an expression, with x first: 7 less than x.
10
Write this as an expression, with n first: 5 more than n.
11
Write this as an expression, with x first: 2 times x.
12
Write this as an expression, with n first: 17 less than n.
13
Write this as an expression, with x first: 20 times x.
14
Write this as an expression, with n first: 3 less than n.
15
Write this as an expression, with k first: 14 less than k.
16
Write this as an expression, with x first: 20 more than x.
17
Write this as an expression, with n first: 17 more than n.
18
Write this as an expression, with x first: 7 more than x.
19
Write this as an expression, with n first: 11 times n.
20
Write this as an expression, with n first: 16 more than n.

What is in this set

The numbers in this set run from 1 to 20.
Every problem in it will have to be written down from a sentence.
A careful solution takes 1 written step on average.
The mistake this set invites most often, in 37% of the problems: that multiplies; "more than" adds.
Answers are a short answer exactly as the problem asks for it.

Drawing 240 problems from this page produced 133 different ones, 55% — 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 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.