100th Day Math Activities | Place Value, Skip Counting and Number Facts to 100

100th day math activities built around the number 100

These 100th day math activities are an 11 page packet with 70 questions for grades 2 to 5. Every question uses the number 100, so the class can mark the 100th day of school with real math.

Students divide 100, count by tens, find place value in 100, compare 100 centimeters with a meter, add 25 four times and solve short problems that end at 100.

Teachers who need 100th day math activities for a milestone day will find four sections here, and the packet comes with an answer key, an answer sheet and a lesson plan.

What’s on the pages

The worksheet has four sections, and each one has its own heading and directions.

• Multiple choice fun: 20 questions, such as 100 divided by 4, the missing number in 100, 90, 80, __, 60, the steps to count by 10s to reach 100 and the digit in the tens place of 100.
• True or false statements: 15 statements, such as the number 100 being a 3-digit number, 25 + 25 + 25 + 25 equaling 100 and 100 centimeters equaling 1 meter.
• Word Bank completion: 15 questions, such as the first 3-digit number in our place value system and half of 100. The bank has extra words that are not used.
• Short answer tasks: 20 questions where students write a number, such as 100 divided by 10, 100 less than 1000, 100 + 100 + 100 and the number right after 99.

Skip counting, halves and place value all show up, so one number leads to many ideas.

What’s in the download

• Student worksheet: 11 pages
• Answer key: 13 pages, with a short explanation after each answer
• Answer sheet: 3 pages
• Lesson plan: 2 pages

The four parts add up to 29 pages, and everything comes as PDF.

How to use these 100th day math activities

The lesson plan is set for 60 to 90 minutes. Its objectives are to understand the place value of the three-digit number 100, to do mental math with 100 in all four operations, to use skip counting by 2s, 5s and 10s to reach 100, and to solve word problems about the milestone of 100 days of learning.

The plan begins with a 10 minute warm-up asking what the number 100 means to students, and it shows 100 with base-10 blocks. It adds 15 minutes of direct instruction on ways to make 100, such as 10 tens and 4 quarters of 25. It follows with 15 minutes of guided practice, 30 minutes of independent work and a 10 minute wrap-up.

The materials list base-10 blocks, printed worksheet packs, a whiteboard with dry-erase markers and 100-chart reference sheets.

A 100 chart on the wall helps students see skip counting patterns. They can color the multiples of 10 and talk about what they see.

The answer sheet keeps the worksheet clean for reuse, and the answer key gives a short explanation after every answer.

Looking for 100th day of school math worksheets, skip counting to 100 or number 100 practice? These 100th day math activities cover both, and the 100th day math activities with answer key pages let a helper check the work in minutes.

Where it fits

Use it for the 100th day of school, math centers, morning work, homework or a number sense unit. Homeschool families can work through one section a day.

Take a look at the preview pages before you buy, so you can see the worksheet, the answer key and the answer sheet.

For more practice, browse the math worksheets, the wider set of printable worksheets or the whole shop.

Many teachers use these 100th day math activities in a themed day, one section at a time, and repeat the set the next year to see growth.

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