Mathematics for IGCSE & O level - Using A Calculator (Section 1 - No. 25)
What is the purpose of the EE (or EXP) key on a calculator?
To enter fractions.
To enter standard form numbers.
To find square roots.
To convert between hours and minutes.
Explication
The EE or EXP key is used to enter exponents for numbers in scientific notation (standard form).