Express the following as cm using the decimals.
$116$ mm.

Hint: or solving this particular question, we have to use the relationship between millimetres and centimetres that is $1mm = \dfrac{1}{{10}}cm$ , we just have to replace $1mm$ by $\dfrac{1}{{10}}cm$ , this will give you desired result.

Complete step by step solution:
We have to express the given $116$ mm into cm using the decimals.
So, we have $116$ mm,
We know that,
We can express this as,
$116$ mm is equals to $116 \times 1$mm,
Mathematically, we can write,
$116mm = 116 \times 1mm$
We also know that $1mm = \dfrac{1}{{10}}cm$,
Now, substitute this in the above expression. We will get,
$116mm = 116 \times \dfrac{1}{{10}}cm$
Now, Simply the above expression. We will get,
$116mm = \dfrac{{116}}{{10}}cm$
Again, Simply the above expression. We will get,
$116mm = 11.6cm$
Hence, we get the required result.

Additional information:
In the given question, no mathematical formula except the relation $1mm = \dfrac{1}{{10}}cm$ is being used only the mathematical operations such as addition, subtraction, multiplication and division is used. Use addition or subtraction properties of equality to gather variable terms on one side of the equation and constant on the other side of the equation. Use the multiplication or division properties of equality to form the coefficient of the variable term equivalent to one.

Note: Questions similar in nature as that of above can be approached in a similar manner and we can solve it easily. The important thing to recollect about any equation is that the ‘equals’ sign represents a balance. What the sign says is that what’s on the left-hand side is strictly an equal to what’s on the right-hand side. It is the type of question where only mathematical operations such as addition, subtraction, multiplication and division is used.