This worksheet on the Latin roots deca, dec, deka, and deci can assist students in a number of ways I think. These mean, as you probably already recognized, ten; be aware though, that deci actually means tenth. In any case, this is a vocabulary builder, but contains words primarily from mathematics, so it’s probably best used there to assist students in developing their own understanding and using words growing from these roots.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.