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Many real-life problems involve numbers that are not convenient to work with without calculator assistance.
Many calculator-solved problems give an approximate solution, not an exact solution,
and the purpose of this section is to increase your awareness of the difference between the two.

When two numbers [beautiful math coming... please be patient] $\,x\,$ and $\,y\,$ live at the same place on the number line,
we say “$\,x\,$ equals $\,y\,$” and write “$\,x = y\,$”.
However, when two numbers [beautiful math coming... please be patient] $\,x\,$ and $\,y\,$ are just close to each other, but not equal,
we say that “$\,x\,$ is approximately equal to $\,y\,$”.

Here, you will compare two numbers, and decide if they are equal, or approximately equal.