The learning center titled "Solve the Clues to Solve the Crime: Rounding to the Tens and Hundreds Place" contains four individual crime scenes with four accompanying worksheets. Each one is placed in its own folder, and students choose which crime scene folder they want to work on from the learning center bin.

Each crime scene is a little different, but each accompanying worksheet features rounding questions that help students get to the bottom of who did it. For example, the suspects in Crime Scene 1 include four different characters. One question asks, "What is 336 rounded to the nearest tens place?" Four answers are provided below with an accompanying clue. In this case, students would choose 340, and the accompanying cue is a claw. After answering the questions and collecting the clues, they figure out who did it. There's room on the page where students can write the name of the suspect they think committed the crime.

The learning center includes everything you need to set up the center, including a teacher's instruction sheet. This activity gives students essential practice rounding two-and three-digit numbers, which builds number sense and encourages the development of mental math strategies.