This puzzle is designed to help your students practice finding the total amount using the simple interest formula. I find that these puzzles help my students gain confidence because they offer a level of support. They enjoy the cutting/pasting and the mind challenge. Unused answers reflect common student misconceptions, such as incorrect conversion of percentages to decimals and not adding the interest to the principal.
Answer Key with visual to make grading/evaluating easier for you.
Sheet with scrambled pieces so that students can do their own cutting
Submission sheet for pasting final puzzle
Use this puzzle as reinforcement, for homework, extra activity, or even as a quiz. I always ask my students to also submit their work for these puzzles, so that I know it is their own work and for reference when I see that they've made a mistake.