You have some apples in one bowl and more in another,
addition is the calm answer to:
"If I put them together, how many in the big bowl?" It is the same work as
counting on from the first group: you already
trust the second group's size, then you keep counting. For whole numbers,
3 + 4 = 7 because
7 is where you land after the whole journey. The result has a name: the
sum (or
total).
🧺 SAME AS
Union of two groups with no overlap "adds" the counts, the idea behind the plus sign in real life.