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
$\,x\,$ and $\,y\,$ live at the same place on the number line,
we say “$\,x\,$ equals $\,y\,$” and write
“$\,x = y\,$”.
However, when two numbers
$\,x\,$ 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.
DO NOT USE YOUR CALCULATOR FOR THESE PROBLEMS.