Mixed numbers to improper fractions

Difficulty Standard · Set 375uuj

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1
Write613as a single fraction.
2
Write5210as a single fraction.
3
Write6710as a single fraction.
4
Write367as a single fraction.
5
Write512as a single fraction.
6
Write123as a single fraction.
7
Write113as a single fraction.
8
Write423as a single fraction.
9
Write547as a single fraction.
10
Write225as a single fraction.
11
Write345as a single fraction.
12
Write434as a single fraction.
13
Write5710as a single fraction.
14
Write623as a single fraction.
15
Write212as a single fraction.
16
Write2910as a single fraction.
17
Write489as a single fraction.
18
Write212as a single fraction.
19
Write338as a single fraction.
20
Write236as a single fraction.

What is in this set

The numbers in this set run from 1 to 10.
Every problem in it will cross between improper and mixed form.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 100% of the problems: the whole number was added to the numerator.
Answers are a fraction in its lowest terms, written like 3/4.

Drawing 240 problems from this page produced 151 different ones, 63% — 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 5 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.