Simple Arithmetic, Like 2 + 2 = 4
This page is the CodyCross answer for the clue below from Physics, Group 1900, Puzzle 1 (North and South Poles).
Question is: Simple Arithmetic, Like 2 + 2 = 4
and the answer is: ADDITION
Word Meaning:
ADDITION — (uncountable) The act of adding anything.
Definitions from Wiktionary.