Here, you will practice finding reciprocals (multiplicative inverses) of whole numbers and fractions.
For $\,x\ne 0\,$, the reciprocal of $\,x\,$ is $\displaystyle\,\frac{1}{x}\,$.
In particular, the reciprocal of $\displaystyle\,\,\frac{a}{b}\,\,$ is $\displaystyle\,\,\frac{b}{a}\,\,$.
The number
$\,0\,$ does not have a reciprocal,
since
division by zero is not allowed.
For all other numbers,
a number multiplied by its reciprocal equals
$\,1\,$:
$x\cdot \frac1x = 1$
Type in nd (uppercase or lowercase) if the reciprocal is not defined.
Type fractions using a diagonal slash: for example, 1/3 .