100th Day of School Activities For Math Practice

Close-up of a sparkling gold "Happy 100th" sign celebrating the 100th day of school, set against a soft bokeh background of a blue sky and distant hills. A small Formative logo is in the top right corner.
Christy Walters
January 6, 2026

The 100th day of school is a chance to celebrate progress through the year, build classroom community, and practice foundational counting and math skills. We’ve got some fresh, ready-to-use Formative 100th day of school activities that you can assign, grade, and review with little prep time!

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How can I celebrate the 100th day of school with my students?

Celebrating the 100th day encourages students to think about how math and counting affect their daily lives. Activities tied to the number 100 can support math practice in place value, counting, operations, and critical thinking.

Try one of these Formative 100th day of school activities with your K-5 students:

[How can students practice counting with 100s?](id-count)

100th Day of School activity card titled "Countdown to 100!" for grades K-2. Features include counting practice by 1s and 10s with a holiday-themed design for student engagement.

Learning to count to or from 100 helps K-2 students develop number sense and fluency to prepare for basic math concepts. The Countdown to 100 Formative activity includes fun problems that ask students to practice counting by ones and tens up to 100. 

[How can students strengthen their addition and subtraction skills on the 100th day of school?](id-add)

Educational resource card for "100th Day Math" designed for grades 1-3. The activity focuses on basic math practice, including addition and subtraction with multiple question types. Part of the Formative library by Newsela.

Math problems for the 100th day of school give early elementary students a chance to practice their addition and subtraction while taking advantage of the theme of the day. This 100th day math activity from Formative asks students to practice basic math using the number 100.

[How can upper elementary students practice multiplication and division using the number 100?](id-multip)

Graphic for a 100th Day of School math activity titled "100th Day of School Multiplication and Division" for grades 3-5. Features include operations practice and show-your-work questions. Includes a Formative by Newsela logo and an illustration of a student at a laptop.

Students in grades 3-5 can get in on the 100th day of school fun and practice their math skills, too. The 100th Day of School Multiplication and Division activity on Formative asks students to practice multiples and division facts using the number 100.

[What word problems can students solve using the number 100?](id-word)

Math resource graphic for "100th Day of School Math Word Problems" targeted at grades 1-5. It highlights foundational math practice, counting, addition, subtraction, and real-world scenarios.

Word problems encourage students to apply math in real-world scenarios. This builds reasoning and problem-solving skills. You can use the 100th Day of School Math Word Problems activity to get students calculating totals, dividing objects, or working through operations to get the correct answers.

Bring the 100th day of school to life with Formative

Formative makes it easy to turn 100th-day-of-school math activities into meaningful learning opportunities. With ready-to-use content and real-time student insights, you can reinforce key skills without creating specialized lessons just for this unofficial school holiday. 

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