Freeze up on days-supply math? Start with the $1 cheat sheet.

Days supply and unit conversions are the items studiers most often stall on. The Days Supply Cheat Sheet is a one-page pocket card for tablets, liquids, insulin, inhalers, eye drops, and weekly devices. It costs $1. If you want a longer math lesson after that, the PTCB Math Crash Course is $47.99 on its own page. Neither price changes because you took this quiz.

You can still practice on the free days-supply calculators without buying either one. Open the cheat sheet when you want the paid card. The buttons below go to those existing pages. Read the price here first.

Price: Days-Supply Cheat Sheet $1. Next step: PTCB Math Crash Course $47.99.

This is a study-tool match. It does not promise a job, a passing score, a license, or a health outcome.