100th Day of School Activities and Puzzles

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 Games

100th day of school dots and boxes game.
100th DAY OF SCHOOL DOTS AND BOXES GAME

Miscellaneous Ideas for the 100th Day of School

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.

100th Day of School Math Poster

100th day of school math poster.

Ms. Wadsworth shares a brilliant 100th day of school math poster. Don’t have time to make a poster? Challenge your students to make a poster with a unique math expression, and then you will have instant room decor!

100th Day of School Data Collection Activity

footprints with text "100 steps?".

Can your students predict how far they will walk when taking 100 steps?

Have your students make predictions and then collect data to find out the true answer!

100 Numbers Task

100 numbers task from Sara Van Der Werf.

Sara Van Der Werf’s 100 Numbers Task has become a classic for the first week of school when teaching students how to work in groups. But if you didn’t do it at the beginning of the school year, it would be a fun challenge to give students on the 100th Day of School!

1000th Day of School Ideas for 5th Grade

Fun Fact – Did you know many 5th grade teachers celebrate the fact that their students have completed a total of 1000 days of school instead of just celebrating 100 days of school for that school year?

I’ve created a page full of activities for celebrating the 1000th Day of School.

1000th day of school activities and puzzles for 5th grade.

Puzzle Solutions

Puzzle solutions are available on a password-protected solution page. I do not openly post the puzzle answer keys because one of my goals as a resource creator is to craft learning experiences for students that are non-google-able. I want teachers to be able to use these puzzles in their classrooms without the solutions being found easily on the Internet.

Please email me at sarah@mathequalslove.net for the password to the answer key database featuring all of my printable puzzles and math worksheets. I frequently have students emailing me for the answer key, so please specify in your email what school you teach at and what subjects you teach. If you do not provide these details, I will not be able to send you the password.

Not a teacher? Go ahead and send me an email as well. Just let me know what you are using the puzzles for. I am continually in awe of how many people are using these puzzles with scouting groups, with senior adults battling dementia, or as fun activities in their workplace. Just give me enough details so I know you are not a student looking for answers to the puzzle that was assigned as their homework!