This is a worksheet with 25 questions for exponents 2-4. The questions vary in difficulty but can all be done without a calculator. The student figures out the answer to the question and then looks down to the bottom and crosses out the letter that goes with the answer. Then at the end, the remaining letters will spell, in order, the answer to the riddle. This is a great practice for exponents because students can check to see if their answer is there and they like to solve riddles. An answer key is provided.