What are reducing functions?

A reducing function is like a helper that takes a bunch of things and turns them into one single thing, just like when you count how many toys you have in your room.

Imagine you have 5 toy cars, 3 teddy bears, and 2 blocks. You want to know how many toys you have all together. A reducing function would help you do that by adding everything up:

5 + 3 + 2 = 10.

So the helper turned all those separate groups into just one number, 10, which is your total toy count.

Think of it like a group of friends passing around a basket. Each friend adds something to the basket, and when everyone has had their turn, the basket holds just one final item, maybe a big pile of candy. That’s what a reducing function does: it takes many items or numbers and turns them into one.

Sometimes, instead of adding, you might multiply, subtract, or do something else with each step, but no matter what you choose, the helper keeps combining things until there's only one left!