Hundred Board -Montessori Math 4+

Learn to count to 100! Ages 3‪+‬

Rantek Inc.

Designed for iPad

    • 4.1 • 7 Ratings
    • $4.99
    • Offers In-App Purchases



Ages 3-6. This is our most popular app of all time, used by school systems in the United States, Australia, Germany, and others. It is the highest quality app in the store that you'll find to teach and practice the concept of numbers from 1 to 100. We first developed it in 2009 and continue to update it with new features. Thanks for your support of our famous, Hundred Board!

The Hundred Board is a fun and educational exercise found in the Montessori classroom to help children with their counting from 1 to 100. The board and number tiles in the app are exact replicas of the classic classroom materials.

The basic task is to transfer the scrambled number tiles on the right hand side to the board in the correct order.


- Assemble the Hundred Board in sequence using either a touch only method where the number tile moves to the board automatically, or drag and place the tiles to the board for them to snap into position.

- Show the control numbers on the board to simplify the task.

- Simplify the task even further with an activity that shows a reduced number of scrambled tiles to search through.

- Assemble the Hundred Board in a random fashion.

- Assemble the Hundred Board in sequence by Evens or Odds.


- Every number can be heard aloud when it is placed into position, reinforcing the name of each number for the child.

- At the bottom of the screen there is either a score or a timer for parents and teachers to evaluate a child's progress.


Schools worldwide have incorporated our apps into their classrooms. See it used in a Montessori school in Germany here:

The Hundred Board is now promoted by the Australian Institute for Teaching and School Leadership as an effective app for learning number sequencing techniques.

Customer Comments:

"This looks very simple, but, you'd be surprised how engrossing the children find this lesson to be. I've watched our five year old daughter spend over an hour working with it, trying to get to a hundred!"

"Our son (6) started first grade and is ecstatic to be the only kid to write all the numbers from 1-100! Your app is fun to him!"

This activity is a time-tested, teaching tool used in the Montessori classroom that children enjoy doing. The app was co-developed and approved by an AMI certified Montessori teacher with over forty years experience. Use this app as a complement to your child's classroom education and as a follow-up to the other Montessori applications in the app store teaching introductory counting. Your child will enjoy this challenging and fun activity!

Visit our website:

App page:

What’s New

Version 7.4

Updated to run more smoothly.

Ratings and Reviews

4.1 out of 5
7 Ratings

7 Ratings

Teenya ,


I think I like this app better than my daughter does. Maybe she would like the "real" number board from school better. She has trouble with visual discernment and gets overwhelmed with 50 numbers at a time, even with the color sort. I like the concept but she's still not counting out loud and as fast as I would like. She's in first grade and has an extra chromosome. 💗

AstroSaint ,

Great app and Developer team!

I downloaded this app for my two year old. I couldn’t get sound to work. I contacted the developer team and they emailed me back within a few hours and pointed out a setting I had overlooked. This is the type of support I expect when I need assistance. In addition, my daughter loves the app and has been randomly saying her numbers long after she has put her iPad down. Thanks!

alypar ,


I am working with my daughter to learn to count, and I was hoping there would be sound so she can get the number as she is matching it.

Developer Response ,

Simply check the MUTE function on your device - either in the pull-down menu or the button on the side of an older iPad. Today many developers have ignored the MUTE function, so those apps still make sounds even if your MUTE is on - so it could be switched on and you wouldn't realize it... thx!

App Privacy

The developer, Rantek Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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