Numerical expressions is an algebraic expressions or mathematical expressions.
In solving real-word problems, it is very important to know how to translate word problems into numerical expressions in order to solve the problem.
We cannot find what is asked in the problem if we will translate it into numerical expressions.
In translating, we will be able to make an equation and can now start to solve for a variable.
We will use these numerical expressions to make an equation which leads us in solving the variable. And this variable can be the answer or it can lead us to the answer to the problem.