Simplifying a fraction to its lowest terms

Difficulty Stretch · Set bpy11j

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1
Write1422in its lowest terms.
2
Write1034in its lowest terms.
3
Write1215in its lowest terms.
4
Write1024in its lowest terms.
5
Write68in its lowest terms.
6
Write1820in its lowest terms.
7
Write418in its lowest terms.
8
Write818in its lowest terms.
9
Write912in its lowest terms.
10
Write3638in its lowest terms.
11
Write2026in its lowest terms.
12
Write1642in its lowest terms.
13
Write1440in its lowest terms.
14
Write2636in its lowest terms.
15
Write3448in its lowest terms.
16
Write2224in its lowest terms.
17
Write3046in its lowest terms.
18
Write1018in its lowest terms.
19
Write2026in its lowest terms.
20
Write210in its lowest terms.

What is in this set

The numbers in this set run from 2 to 50.
89% of them share a small factor.
11% of them share a factor larger than three.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 70% of the problems: the common factor was subtracted from both numbers; simplifying divides, it does not take away.
Answers are a fraction in its lowest terms, written like 3/4.

Drawing 240 problems from this page produced 152 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 4 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.

Next to this

The missing numerator in an equivalent fraction

Numbers 1–120.

Mixed numbers to improper fractions

Numbers 1–16; every one will cross between improper and mixed form.

All of fractions

24 skills in this topic, 71 sets between them.

Printing it

The printed sheet carries no menus and no advertising, and the answer key is on its own page.