How many ways can your students make 100? This fun activity is ready to print and use. Students will think of as many equations as possible that have 100 as their answer. Two examples are provided to get students started. This activity challenges students to think flexibly and use number sense as well as their knowledge of decomposing numbers, making tens, and more. This can be easily modified to suit a variety of grade levels and student needs. Consider deleting some rows and columns to make it less overwhelming for students who are younger, may struggle with math, have difficulty sustaining attention, or need more space for writing. Include multiplication and division for older students who are ready for a challenge. Perfect for the 100th day of school!