Interactive worksheets -- my newest passion.
Students enter answers in cells. If they enter the right answer, the cell turns green. If they enter the wrong answer, the cell turns red. Instant feedback. I love it.
The problems are images, and I couldn't get them to line up perfectly, so if you like things to be just so, you may not want this one. It's not terrible, or I wouldn't use it. :)
This file only has five questions as I plan to use it simply as a homework assignment. I hope the instant feedback will encourage students to persevere.
It could also easily be used as part of a station review on scientific notation, a task in the personalized learning process, or an indivdiualized tool for tutoring.