These place value review riddles are made for back to school! They are perfect for a review at the beginning of 4th grade, or while learning place value in 3rd grade. Each activity can be printed or used digitally in Google Classroom or in programs that use Microsoft PowerPoint, such as Microsoft Teams! There are FOUR riddle activities in this resource. They are on the following topics:Rounding to the nearest 10 and 100Comparing numbers up to 1,000Word form of 3 digit numbersExpanded form of 3 d