Question

How are real numbers used in everyday life

Answer 1

Numbers are used everyday to read street signs, find the price of something when you go food shopping, as you see they are uses for many reasons

Answer 2

You're in middle school, so I'm guessing that you are NOT
an engineer or a math teacher.

If that's true, then every number you use in your everyday life
is a real number, and it's most likely a rational number too.

I don't think you've been introduced yet to numbers that are
not real or not rational.