Easy Way to Order Fraction Least to Greatest

Ordering‌ ‌Fractions‌

Here we will learn about ordering fractions.
There are also ordering fractions worksheets based on Edexcel, AQA and OCR exam questions, along with further guidance on where to go next if you're still stuck.

What is ordering fractions?

Ordering fractions is where we rearrange a set of fractions so that the smallest is at the start, followed by the next smallest and so on. This is called ascending order.

To do this we rewrite the fractions so that they have the same denominators which we can then compare.

We can order any type of fraction including proper fractions, improper fractions and mixed numbers.

E.g.

Write these fractions in ascending order:

In ascending order:

What is ordering fractions?

How to order fractions

In order to put fractions in ascending order:

1. Write all the fractions so that they have a common denominator
2. Find the smallest fraction by comparing the numerators and order the fractions
3. Rewrite the numbers as they appear in the question in size order

Explain how to put fractions in ascending order in 3 steps

Ordering fractions worksheet

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Ordering fractions worksheet

Get your free ordering fractions worksheet of 20+ questions and answers. Includes reasoning and applied questions.

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Ordering fractions examples

Example 1: ordering proper fractions

Write the following fractions in order of size:

\[\frac{3}{4} \quad \quad \frac{1}{2} \quad \quad \frac{5}{6} \quad \quad \frac{7}{12}\]

1. Write all the fractions so that they have a common denominator

The fractions have different denominators.
The denominators of the fractions are 2, 4, 6 and 12. 2, 4 and 6 go into 12.
The lowest common multiple is 12, so we can convert the fractions so they have a common denominator of 12 .

\[\frac{3\times3}{4\times3}=\frac{9}{12} \]

\[\frac{1\times6}{2\times6}=\frac{6}{12} \]

\[\frac{5\times2}{6\times2}=\frac{10}{12} \]

2 Find the smallest fraction by comparing the numerators and order the fractions

Here are the fractions with their common denominator of 12

\[\frac{9}{12} \quad \quad \frac{6}{12} \quad \quad \frac{10}{12} \quad \quad \frac{7}{12} \]

Writing them in size order would give

\[\frac{6}{12} \quad \quad \frac{7}{12} \quad \quad \frac{9}{12} \quad \quad \frac{10}{12} \]

3 Rewrite the numbers as they appear in the question in size order

\[\frac{6}{12} \quad \quad \frac{7}{12} \quad \quad \frac{9}{12} \quad \quad \frac{10}{12} \]

\[\frac{1}{2} \quad \quad \;\; \frac{7}{12} \quad \quad \;\frac{3}{4} \quad \quad \; \frac{5}{6}\]

Example 2: ordering proper fractions

Write the following fractions in order of size:

\[\frac{11}{30} \quad \quad \frac{4}{15} \quad \quad \frac{2}{5} \quad \quad \frac{1}{3} \]

Write all the fractions so that they have a common denominator

The fractions have different denominators.
The denominators of the fractions are 3, 5, 15 and 30.  3, 5 and 15 go into 30.
The lowest common multiple is 30, so we can convert the fractions so they have a common denominator of 30 .

\[\frac{4\times2}{15\times2}=\frac{8}{30} \]

\[\frac{2\times6}{5\times6}=\frac{12}{30} \]

\[\frac{1\times10}{3\times10}=\frac{10}{30} \]

Find the smallest fraction by comparing the numerators and order the fractions

Here are the fractions with their common denominator of

30

\[\frac{11}{30} \quad \quad \frac{8}{30} \quad \quad \frac{12}{30} \quad \quad \frac{10}{30} \]

Writing them in size order would give

\[\frac{8}{30} \quad \quad \frac{10}{30} \quad \quad \frac{11}{30} \quad \quad \frac{12}{30} \]

Rewrite the numbers as they appear in the question in size order

\[\frac{8}{30} \quad \quad \frac{10}{30} \quad \quad \frac{11}{30} \quad \quad \frac{12}{30} \]

\[\frac{4}{15} \quad \quad \;\frac{1}{3} \quad \quad \;\frac{11}{30} \quad \quad \;\frac{2}{5}\]

Example 3: ordering improper fractions and mixed numbers

Write the following fractions in order of size:

\[\frac{7}{4} \quad \quad 1\frac{1}{2} \quad \quad 1\frac{2}{3} \quad \quad \frac{29}{24}\]

Write all the fractions so that they have a common denominator

We can either write all the fractions as improper fractions or as mixed numbers. It is simpler to write them as mixed numbers and concentrate on the fractional part of the mixed number.

\[\frac{29}{24}=1\frac{5}{24} \quad \quad \quad \frac{7}{4}=1\frac{3}{4}\]

The fractions have different denominators.
The denominators of the fractions are

2, 3, 4

and

24. 2, 3

and

4

go into

24

.
The lowest common multiple is

24

, so we can convert the fractions so they have a common denominator of

24

.

\[1\frac{3\times6}{4\times6}=1\frac{18}{24}\]

\[1\frac{1\times12}{2\times12}=1\frac{12}{24} \]

\[1\frac{2\times8}{3\times8}=1\frac{16}{24}\]

Find the smallest fraction by comparing the numerators and order the fractions

Here are the fractions with their common denominator of

24

\[1\frac{18}{24} \quad \quad 1\frac{12}{24} \quad \quad 1\frac{16}{24} \quad \quad 1\frac{5}{24} \]

Writing them in size order would give

\[1\frac{5}{24} \quad \quad 1\frac{12}{24} \quad \quad 1\frac{16}{24} \quad \quad 1\frac{18}{24} \]

Rewrite the numbers as they appear in the question in size order

\[1\frac{5}{24} \quad \quad 1\frac{12}{24} \quad \quad 1\frac{16}{24} \quad \quad 1\frac{18}{24} \]

\[\frac{29}{24} \quad \quad \;\;1\frac{1}{2} \quad \quad \;\;\; 1\frac{2}{3} \quad \quad \;\; \frac{7}{4}\]

Example 4: ordering improper fractions and mixed numbers

Write the following fractions in order of size:

\[\frac{12}{5} \quad \quad 2\frac{3}{10} \quad \quad 2\frac{7}{20} \quad \quad \frac{9}{4} \]

Write all the fractions so that they have a common denominator

We can either write all the fractions as improper fractions or as mixed numbers. It is simpler to write them as mixed numbers and concentrate on the fractional part of the mixed number.

\[\frac{12}{5}=2\frac{2}{5} \quad \quad \quad \frac{9}{4}=2\frac{1}{4}\]

The fractions have different denominators.
The denominators of the fractions are

4, 5, 10

and

20. 4, 5

and

10

go into

20

.
The lowest common multiple is

20

, so we can convert the fractions so they have a common denominator of

20

.

\[2\frac{2\times4}{5\times4}=2\frac{8}{20}\]

\[2\frac{3\times2}{10\times2}=2\frac{6}{20} \]

\[2\frac{1\times5}{4\times5}=2\frac{5}{20}\]

Find the smallest fraction by comparing the numerators and order the fractions

Here are the fractions with their common denominator of

20

\[2\frac{8}{20}\quad \quad 2\frac{6}{20} \quad \quad 2\frac{7}{20} \quad \quad 2\frac{5}{20} \]

Writing them in size order would give

\[2\frac{5}{20} \quad \quad 2\frac{6}{20} \quad \quad 2\frac{7}{20} \quad \quad 2\frac{8}{20} \]

Rewrite the numbers as they appear in the question in size order

\[2\frac{5}{20} \quad \quad 2\frac{6}{20} \quad \quad 2\frac{7}{20} \quad \quad 2\frac{8}{20} \]

\[\frac{9}{4} \quad \quad \;\;\;2\frac{3}{10} \quad \quad \;2\frac{7}{20} \quad \quad \;\;\frac{12}{5} \]

Example 5: ordering fractions and decimals

Write the following fractions in order of size:

\[\frac{3}{4} \quad \quad 0.55 \quad \quad \frac{1}{2} \quad \quad 0.6 \]

Write all the fractions so that they have a common denominator

When there is a mixture of decimals and fractions it is sometimes easier to write them all as decimals.  Some fractions and their decimal equivalents may be well known, otherwise we may need to work out a division.

\[\frac{3}{4}=3\div4=0.75\]

\[\frac{1}{2}=1\div2=0.5\]

Find the smallest fraction by comparing the numerators and order the fractions

Here are the numbers as decimals. To help with comparing it is a good idea to put in a zero in the hundredths column for

0.5

and

0.6

. We can compare the hundredths.

\[0.75 \quad \quad 0.55 \quad \quad 0.50 \quad \quad 0.60 \]

Writing them in size order would give

\[0.50 \quad \quad 0.55 \quad \quad 0.60 \quad \quad 0.75 \]

Rewrite the numbers as they appear in the question in size order

\[0.50 \quad \quad 0.55 \quad \quad 0.60 \quad \quad 0.75 \]

\[\frac{1}{2} \quad \quad \;\;\;0.55 \quad \quad \; 0.6 \quad \quad \;\; \frac{3}{4} \]

Example 6: ordering fractions and decimals

Write the following numbers in order of size:

\[0.67 \quad \quad \frac{2}{3} \quad \quad 0.603 \quad \quad \frac{5}{8} \]

Write all the fractions so that they have a common denominator

When there is a mixture of decimals and fractions it is sometimes easier to write them all as decimal fractions (decimals). Some fractions and their decimal equivalents may be well known, otherwise we may need to work out a division.

\[\frac{2}{3}=2\div3=0.666…\]

\[\frac{5}{8}=5\div8=0.625\]

Find the smallest fraction by comparing the numerators and order the fractions

Here are the numbers as decimals. To help with comparing it is a good idea to put in a zero in the thousandths column for

0.67

so we can compare the hundredths.

\[0.670 \quad \quad 0.666… \quad \quad 0.603 \quad \quad 0.625 \]

Writing them in size order would give

\[0.603 \quad \quad 0.625 \quad \quad \quad 0.666… \quad \quad 0.670 \]

Rewrite the numbers as they appear in the question in size order

\[0.603 \quad \quad 0.625 \quad \quad 0.666… \quad \quad 0.670 \]

\[0.603 \quad \quad \;\;\;\frac{5}{8} \quad \quad \;\; \; \; \;\frac{2}{3} \quad \quad \; \; \;\;\; 0.67 \]

Common misconceptions

• Changing the numbers into the same type of fractions

It is much easier to change the fractions so that they have a common denominator and then compare the numerators.

• Use decimals if the common denominator is too tricky to find

Sometimes finding a common denominator can be very difficult so it can be easier to convert the fractions to decimals and compare them instead.

• Smallest to largest or largest to smallest?

Usually "in size order" means from smallest to largest.  But the question might want you to put the numbers in descending order from largest to smallest.

E.g.
Write these numbers in order of size from largest to smallest:

\[\frac{4}{7} \quad \quad\frac{11}{14}\quad \quad \frac{1}{2}\]

Convert the fractions so they have the same denominator:

\[\frac{8}{14} \quad \quad \frac{11}{14} \quad \quad \frac{7}{14}\]

Write the fractions in order of size from largest to smallest:

\[\frac{11}{14} \quad \quad\frac{8}{14} \quad \quad \frac{7}{14}\]

The final answer is:

\[\frac{11}{14} \quad \quad \frac{4}{7} \quad \quad \frac{1}{2} \]

Practice ordering fractions questions

\frac{5}{12} \quad \quad \frac{2}{3} \quad \quad \frac{5}{6} \quad \quad \frac{1}{2}

\frac{5}{12} \quad \quad \frac{1}{2} \quad \quad \frac{2}{3} \quad \quad \frac{5}{6}

\frac{2}{3} \quad \quad \frac{1}{2} \quad \quad \frac{5}{12} \quad \quad \frac{5}{6}

\frac{1}{2} \quad \quad \frac{2}{3} \quad \quad \frac{5}{6} \quad \quad \frac{5}{12}

\frac{5}{12} \quad \quad \frac{1}{2}=\frac{6}{12} \quad \quad \frac{2}{3}=\frac{8}{12} \quad \quad \frac{5}{6}=\frac{10}{12}

\frac{5}{8} \quad \quad \frac{13}{24} \quad \quad \frac{7}{12} \quad \quad \frac{3}{4}

\frac{13}{24} \quad \quad \frac{3}{4} \quad \quad \frac{7}{12} \quad \quad \frac{5}{8}

\frac{13}{24} \quad \quad \frac{7}{12} \quad \quad \frac{5}{8} \quad \quad \frac{3}{4}

\frac{3}{4} \quad \quad \frac{5}{8} \quad \quad \frac{7}{12} \quad \quad \frac{13}{24}

\frac{13}{24} \quad \quad \frac{7}{12}=\frac{14}{24} \quad \quad \frac{5}{8}=\frac{15}{24} \quad \quad \frac{3}{4}=\frac{18}{24}

\frac{7}{6} \quad \quad 1\frac{11}{30} \quad \quad 1\frac{2}{5} \quad \quad \frac{19}{15}

\frac{7}{6} \quad \quad \frac{19}{15} \quad \quad 1\frac{2}{5} \quad \quad 1\frac{11}{30}

\frac{7}{6} \quad \quad \frac{19}{15} \quad \quad 1\frac{11}{30} \quad \quad 1\frac{2}{5}

1\frac{2}{5} \quad \quad \frac{7}{6} \quad \quad \frac{19}{15} \quad \quad 1\frac{11}{30}

\frac{7}{6}=1\frac{5}{30} \quad \quad \frac{19}{15}=1\frac{8}{30} \quad \quad 1\frac{11}{30} \quad \quad 1\frac{2}{5}=1\frac{12}{30}

\frac{67}{20} \quad \quad \frac{17}{5} \quad \quad 3\frac{7}{10} \quad \quad 3\frac{3}{4}

3\frac{3}{4} \quad \quad 3\frac{7}{10} \quad \quad \frac{17}{5} \quad \quad \frac{67}{20}

3\frac{3}{4} \quad \quad \frac{17}{5} \quad \quad 3\frac{7}{10} \quad \quad \frac{67}{20}

\frac{67}{20} \quad \quad 3\frac{7}{10} \quad \quad \frac{17}{5} \quad \quad 3\frac{3}{4}

\frac{67}{20}=3\frac{7}{20} \quad \quad \frac{17}{5}=3\frac{8}{20} \quad \quad 3\frac{7}{10}=3\frac{14}{20} \quad \quad 3\frac{3}{4}=3\frac{15}{20}

0.2 \quad \quad \frac{1}{2} \quad \quad 0.3 \quad \quad \frac{1}{4}

0.2 \quad \quad \frac{1}{4} \quad \quad 0.3 \quad \quad \frac{1}{2}

0.3 \quad \quad \frac{1}{2} \quad \quad 0.2 \quad \quad \frac{1}{4}

\frac{1}{4} \quad \quad 0.3 \quad \quad \frac{1}{2} \quad \quad 0.2

0.2=0.20 \quad \quad \frac{1}{4}=0.25 \quad \quad 0.3=0.30 \quad \quad \frac{1}{2}=0.50

0.71 \quad \quad \frac{3}{4} \quad \quad \frac{4}{5} \quad \quad 0.82

0.71 \quad \quad \frac{3}{4} \quad \quad 0.82 \quad \quad \frac{4}{5}

0.71 \quad \quad \frac{4}{5} \quad \quad 0.82 \quad \quad \frac{3}{4}

\frac{3}{4} \quad \quad 0.71 \quad \quad 0.82 \quad \quad \frac{4}{5}

0.71=0.71 \quad \quad \frac{3}{4}=0.75 \quad \quad \frac{4}{5}=0.80 \quad \quad 0.82=0.82

Ordering fractions GCSE questions

1.  Here are four fractions:

\frac{17}{20} \quad \quad \frac{7}{10} \quad \quad \frac{3}{4} \quad \quad \frac{3}{5}

Write the fractions in order of size.

Starting with the smallest fraction.

(2 Marks)

Show answer

\frac{17}{20} \quad \quad \frac{7}{10}=\frac{14} {20} \quad \quad \frac{3}{5}=\frac{12}{20} \quad \quad \frac{3}{4}=\frac{15}{20}

(1)

\frac{3}{5} \quad \quad \frac{7}{10} \quad \quad \frac{3}{4} \quad \quad \frac{17}{20}

(1)

2. Here are four fractions:

\frac{2}{5} \quad \quad \frac{1}{4}\quad \quad \frac{4}{13}\quad \quad \frac{3}{10}

Write the fractions in order of size.

Starting with the smallest fraction.

(2 Marks)

Show answer

\frac{2}{5}=0.4 \quad \quad \frac{1}{4}=0.25 \quad \quad \frac{4}{13}=0.307… \quad \quad \frac{3}{10}=0.3

(1)

\frac{1}{4}\quad \quad \frac{3}{10}\quad \quad \frac{4}{13}\quad \quad \frac{2}{5}

(1)

3.Place the following numbers in order of size, smallest first:

2\frac{1}{4} \quad \quad 1.76^2 \quad \quad 2.14 \quad \quad \frac{17}{6}

(2 Marks)

Show answer

2\frac{1}{4}=2\frac{3}{12}=2.25 \quad \quad 1.76^2=3.0976 \quad \quad \frac{17}{6}=2\frac{10}{12}=2.833…

(1)

2.14 \quad \quad 2\frac{1}{4} \quad \quad \frac{17}{6} \quad \quad 1.76^2

(1)

Learning checklist

You have now learned how to:

• Write fractions in order of size

Still stuck?

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