Writing an expression from words

Difficulty Standard · Set pfmqkw

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

What is in this set

The numbers in this set run from 1 to 10.
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 33% 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 81 different ones, 34% — 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.