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100th Day of School Math Activities

This curated collection of 100th Day of School Math Activities will help you celebrate this momentous day in style with a collection of activities and puzzles related to the number 100.

100th day of school math activities with 100 in balloons.

Many of the 100th Day of School resources you will find online are geared toward the lower elementary grades. Here is a collection of 100th day of school activities that can be used in the middle school or high school math classroom as well!

In my opinion, students are never too old to celebrate 100 days of learning!

100th Day of School Square Puzzle

100th day of school puzzle.

Celebrate 100 days of school with this free printable 100th day of school puzzle. Can you assemble the pieces to form a 3×3 rectangle where the pieces match along each edge?

What Has Your Teacher Said 100 Times?

speech bubble with question "what has your teacher said 100 times this year?"

Here’s a fun question to ask your students on the 100th day of school: What is something your teacher has said 100 times this year?

100 Math Expressions for the 100th Day of School

number 100 on top of a stack of post-it notes.

Maddie Garcia has students celebrate the 100th Day of School by having students come up with 100 different math expressions that equal 100. Students write these expressions on post-it notes which are then arranged to make the number 100 on the wall.

The great thing about this activity is that the level of difficulty of the math expressions can easily match your students’ ability levels.

Jennifer Williams takes a similar approach by having students come up with 100 Exponent Problems for the 100th Day of School.