Compound Interest Explained: Interest That Earns Interest

TITLE Compound Interest Explained: Interest That Earns Interest DESCRIPTION Two friends each save $1,000 at 5%. One takes the interest out every year — the same $50, forever. The other leaves it in, so each year's interest joins the pile and starts earning too. Ten years later they are not close. In this Mini Lesson we go slow and watch compound interest happen one year at a time — $50, then $52.50, then $55.13 — and see that the growing rent IS the whole idea: the interest is earning interest. Then the shortcut formula A = P(1 + r/n)^(nt) takes us straight to $1,628.89, and one chart shows the straight simple-interest line bending into a curve that peels away. It's why starting early beats starting big — and why the same curve on a credit card works against you. No prerequisites, just everyday money. [PLAYLIST LINK] #math #learnmath #compoundinterest #interest #savings ORBITAL — Watch it click.

Added 23 Jul 2026