Let's look at the following fraction model, where each circle represents one whole.

Each whole has been split into \color{blue}5 parts. Of these parts, \color{red}9 are shaded. Therefore, this picture represents the following fraction:

\dfrac{\color{red}9}{\color{blue}5}

This type of fraction is called an improper fraction because the numerator ( {\color{red}9} ) is larger than the denominator ( {\color{blue}5} ). Improper fractions are used to represent numbers greater than or equal to one whole.

Improper fractions are sometimes called top-heavy fractions.

FLAG

What improper fraction is shown in the picture below?

EXPLANATION

Each shape consists of \color{blue}4 parts, and there are 2\times {\color{blue}4} +2 = \color{red}10 shaded parts in total.

Therefore, the picture represents the improper fraction \dfrac{\color{red}10}{\color{blue}4}.

FLAG

What improper fraction is shown in the picture above?

a
$\dfrac{2}{5}$
b
$\dfrac{3}{7}$
c
$\dfrac{5}{8}$
d
$\dfrac{2}{8}$
e
$\dfrac{8}{5}$

The improper fraction represented by the shaded parts in the picture above is

a
b
c
d
e

What improper fraction is shown in the picture above?

a
$\dfrac{20}{17}$
b
$\dfrac{4}{17}$
c
$\dfrac{17}{4}$
d
$\dfrac{17}{5}$
e
$\dfrac{5}{4}$

Draw a fraction model that represents the improper fraction \dfrac{12}{7}.

EXPLANATION

The improper fraction \dfrac{\color{red}12}{\color{blue}7} means

  • a "whole" is made up of \color{blue}7 parts, and

  • \color{red}12 parts must be shaded.

Therefore, a correct picture is the following:

FLAG

Which of the following pictures represents the improper fraction $\dfrac{7}{4}?$

a
b
c
d
e

Which of the following pictures represents the improper fraction $\dfrac{8}{3}?$

a
b
c
d
e

We can also represent improper fractions using number lines.

For example, let's find the improper fraction represented by the number line below.

Notice that the line segment from 0 to 1 is split into \color{blue}4 equal parts. Each part represents \dfrac{1}{\color{blue}4} of a whole.

The number we are interested in is located \color{red}5 steps from 0 (left to right).

Therefore, the picture represents the improper fraction \dfrac{\color{red}5}{\color{blue}4}.

FLAG

What improper fraction is shown on the number line?

EXPLANATION

Notice that the line segment from 0 to 1 is split into \color{blue}4 equal parts. Each part represents \dfrac{1}{\color{blue}4} of a whole.

The number we are interested in is located 2\times {\color{blue}4} +1 = \color{red}9 steps from 0 (left to right).

Therefore, the picture represents \dfrac{\color{red}9}{\color{blue}4}.

FLAG

The improper fraction represented on the number line above is

a
b
c
d
e

What improper fraction is shown on the number line?

a
$\dfrac{4}{6}$
b
$\dfrac{6}{3}$
c
$\dfrac{1}{4}$
d
$\dfrac{6}{4}$
e
$\dfrac{3}{6}$

The improper fraction represented on the number line above is

a
b
c
d
e
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