A fun way to practice with self-checking riddle worksheets ... Jul 18, 2018 - A fun way to practice with self-checking riddle worksheets. Students know by being able to complete the riddle at the bottom if they were doing the work correctly. Covers Standards: MACC5.NBT.1.1 and MACC5.NBT.1.2 Great addition to work from Go Math 5th Grade - Chapter 1