[Intro: spoken over jazz-funk piano] Pencils up. Percent means out of a hundred. Hundred deep. [Verse 1] Percent means "per hundred" — a fraction with a hundred on the floor, A hundred percent's the whole thing — nothing less and nothing more. Fifty percent is one-half, twenty-five percent's a quarter piece, Seventy-five's three-fourths — know those benchmarks, think with ease. Percent to a decimal? Drop the sign, slide the point two places left, Thirty-five percent — point three-five — that's the move, that's the step. Percent of a number? Change the percent to a decimal, then multiply it through, Twenty percent of forty-five — point two times forty-five — nine, that's true. Ten percent's a shortcut — move the point one place left, it's quick, Ten percent of eighty's eight — thirty percent is three of those — twenty-four, that's the trick. [Hook] Hundred deep (hundred deep!) — percent means out of a hundred, Part over whole, times a hundred — that's the rate, that's the one. "Is" over "of" equals percent over a hundred — set it up, then solve, Cross-multiply, divide it out — every percent problem's resolved. (Part!) (Whole!) (Percent!) — hundred deep — now you know. [Verse 2: double-time] Three kinds of questions — find the part, the percent, or the whole, Same three pieces every time — find the missing one, that's the goal. Find the part — fifteen percent of eighty — point one-five times eighty — twelve, Find the percent — eighteen out of twenty-four — divide — point seven-five — seventy-five percent, and that's how you excel. Find the whole — twenty-one is thirty percent of what? Set the proportion up right, Twenty-one over x equals thirty over a hundred — twenty-one hundred divided by thirty — seventy, tight. "Is" sits on top, "of" sits on the bottom — the words tell you where they go, Percent over a hundred on the other side — that's the setup, run the show. Over a hundred percent? More than the whole — a hundred fifty percent is one and a half, Under one percent? Point five percent is point oh-oh-five — tiny, but it counts in the math. [Hook] Hundred deep (hundred deep!) — percent means out of a hundred, Part over whole, times a hundred — that's the rate, that's the one. "Is" over "of" equals percent over a hundred — set it up, then solve, Cross-multiply, divide it out — every percent problem's resolved. (Part!) (Whole!) (Percent!) — hundred deep — now you know. [Beat Switch: darker heavier drums, aggressive cadence] Twenty-five percent off a sixty-dollar pair — a quarter of sixty — fifteen off the tag, Pay forty-five — or take seventy-five percent of sixty — same total in the bag. Sales tax adds on — eight percent of fifty — point oh-eight times fifty — four, Fifty plus four — fifty-four dollars at the register, that's the score. Tip fifteen percent on forty — ten percent is four, half of that is two, Four plus two — six dollars — mental math will see you through. Percent change — the change divided by the original amount, Forty up to fifty — ten over forty — twenty-five percent increase, that's the count. Lose fifty percent, then gain fifty percent — you won't get back to the start, A hundred down to fifty, up to seventy-five — new base each time — play it smart. [Hook] Hundred deep (hundred deep!) — percent means out of a hundred, Part over whole, times a hundred — that's the rate, that's the one. "Is" over "of" equals percent over a hundred — set it up, then solve, Cross-multiply, divide it out — every percent problem's resolved. (Part!) (Whole!) (Percent!) — hundred deep — now you know. [Outro: spoken, beat drops to piano] "Forty questions on the test. You got thirty-four right." Part over whole — thirty-four over forty. Divide — point eight-five. Times a hundred — eighty-five percent. Eighty-five out of every hundred. Hundred deep. Class dismissed.
