The reciprocal of a fraction is a bit like turning it upside down: we switch the numerator and denominator.

To find the reciprocal of a \dfrac{1}{20}, we switch the numerator and the denominator as follows:

\dfrac{\color{blue}1}{\color{red}20} \quad\rightarrow\quad \dfrac{\color{red}20}{\color{blue}1}

Now we simplify:

\dfrac{20} 1 = 20

So the reciprocal of \dfrac{1}{20} is 20.

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What is the reciprocal of \dfrac{2}{7}?

EXPLANATION

To find the reciprocal of a fraction, we switch the numerator and the denominator:

\dfrac{\color{blue}2}{\color{red}7} \quad\rightarrow\quad \dfrac{\color{red}7}{\color{blue}2}

So the reciprocal of \dfrac{2}{7} is \dfrac{7}{2}.

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What is the reciprocal of $\dfrac{6}{5}?$

a
$\dfrac{5}{11}$
b
$6$
c
$\dfrac{11}{6}$
d
$\dfrac{5}{6}$
e
$30$

The reciprocal of $\dfrac{1}{2}$ is

a
b
c
d
e

What is the reciprocal of \dfrac{3}{14} as a mixed number?

EXPLANATION

To find the reciprocal of a fraction, we switch the numerator and the denominator:

\dfrac{\color{blue}3}{\color{red}14} \quad\rightarrow\quad \dfrac{\color{red}14}{\color{blue}3}

Now, we convert the resulting fraction to a mixed number:

14\div 3 = 4\,\textrm{R}2=4\,\dfrac 2 3

So the reciprocal of \dfrac{3}{14} is 4\,\dfrac{2}{3}.

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Expressed as a mixed number in its lowest terms, the reciprocal of $\dfrac{2}{3}$ is

a
b
c
d
e

What is the reciprocal of $\dfrac{4}{11}?$

a
$1\,\dfrac{1}{4}$
b
$1\,\dfrac{3}{8}$
c
$1\,\dfrac{3}{4}$
d
$2\,\dfrac{1}{8}$
e
$2\,\dfrac{3}{4}$

To find the reciprocal of a whole number, we must first write the number as a fraction.

For instance, let's write the number 2 as a fraction: 2= \dfrac{2} 1

To find the reciprocal of a fraction, we switch the numerator and the denominator:

\dfrac{\color{blue}2}{\color{red}1} \quad\rightarrow\quad \dfrac{\color{red}1}{\color{blue}2}

So the reciprocal of 2 is \dfrac{1}{2}.

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What is the reciprocal of 9?

EXPLANATION

First, we write 9 as a fraction:

9= \dfrac{9} 1

To find the reciprocal of a fraction, we switch the numerator and the denominator:

\dfrac{\color{blue}9}{\color{red}1} \quad\rightarrow\quad \dfrac{\color{red}1}{\color{blue}9}

So the reciprocal of 9 is \dfrac{1}{9}.

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What is the reciprocal of $3?$

a
$\dfrac{1}{2}$
b
$\dfrac{1}{7}$
c
$\dfrac{1}{13}$
d
$\dfrac{1}{3}$
e
$\dfrac{1}{4}$

The reciprocal of $11$ is

a
b
c
d
e

To find the reciprocal of a mixed number, we must first convert it to an improper fraction.

Let's find the reciprocal of 1\,\dfrac{2}{3}. First, we convert the given mixed number to an improper fraction:

1\,\dfrac{2}{3} = \dfrac{(1\times 3)+2}{3}=\dfrac{5}{3}

To find the reciprocal of a fraction, we switch the numerator and the denominator:

\dfrac{\color{blue}5}{\color{red}3} \quad\rightarrow\quad \dfrac{\color{red}3}{\color{blue}5}

So the reciprocal of 1\,\dfrac{2}{3} is \dfrac{3}{5}.

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What is the reciprocal of 2\,\dfrac{2}{5}?

EXPLANATION

First, we convert the given mixed number to an improper fraction:

2\,\dfrac{2}{5} = \dfrac{(2\times 5)+2}{5}=\dfrac{12}{5}

To find the reciprocal of a fraction, we switch the numerator and the denominator:

\dfrac{\color{blue}12}{\color{red}5} \quad\rightarrow\quad \dfrac{\color{red}5}{\color{blue}12}

So the reciprocal of 2\,\dfrac{2}{5} is \dfrac{5}{12}.

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What is the reciprocal of $1\,\dfrac{1}{6}?$

a
$\dfrac{3}{8}$
b
$\dfrac{6}{7}$
c
$\dfrac{1}{7}$
d
$\dfrac{5}{7}$
e
$\dfrac{2}{9}$

The reciprocal of $4\,\dfrac{2}{5}$ is

a
b
c
d
e
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