Your favorite Greg Tang Math game now better than ever! Play Kakooma Addition, Subtraction and Times against the clock or against an online opponent. Improve your computational fluency and enhance your number sense!

Phenomenal for learning computation, Kakooma is also very fun and addicting. It engages you, whatever your age or occupation, for significant periods of time into solving thousands of computations without thinking about it! Your brain gets sharper as you play and you can feel it!

Created by Greg Tang, New York Times bestselling author of The Grapes of Math, Kakooma is one of the most popular games in the wide collection of education-focused, strong and trusted content that he has created in the last 16 years working as a professional developer for K-6 mathematics and is used in many schools across the world.

– What is this game? —
Kakooma starts with a deceptively simple idea: in a group of numbers, find the number that is the sum of two others. Sounds easy, right? Sometimes it is, but other times the answer is right in front of you and you just can’t see it.

Let’s develop this idea. In a group of 9 numbers, there are 35 unique sums. To find the solution and if you were to do all the computations, you would have to do 35 sums and compare them to find the solution. Now, it wouldn’t be fun if you always were to do all the calculations, right? As you play, you start grouping numbers and develop a feel of where the solution should be.

Take one of our hardest puzzles with 10 sub-puzzles of 9 numbers each. That is 350 unique sums if you were to calculate all the potential solutions! An untrained adult takes generally around 2 minutes to finish such puzzle. The record for a 5th grader is 8 seconds, less than a second per puzzle!!

– Functionalities –
Two game modes –practice and live– offer the options of 3 operators –addition, subtraction, and times– and 3 difficulties –5, 7, and 9 number–.

Practice is a zen mode to discover the game or further train your skills. Compare your time to your previous best times. After solving all the mini-puzzles, you find that the answers of each mini-puzzle create a new puzzle to solve in order to finish the game.

Live lets you play against online opponents from all over the world. We connect you to an opponent with a similar level for an even more challenging and fun game experience!

– More information –
Visit for more educational contents and games!
Visit for questions, support, and feedback!

What’s New

Version 1.3

Support for iOS 9
Fixed bug that made the practice puzzles not clickable.
Fixed bug that made the live mode not accessible.
Removed login and profile. The game is now open, there is no need to login or register.

Ratings and Reviews

1.6 out of 5
98 Ratings

98 Ratings

Bookworm travels ,

5th grade teacher

I love Kakooma and have played it with my students for the past 4 years & have recommended it to many other teachers, as well as parents at conferences. I never had problems with the old version on my iPhone, but the new version on my iPhone crashes almost every time I want to complete a puzzle. I was excited to come across a website where my students can play Kakooma & improve multiplication facts all at the same time on chromebooks. Unfortunately, the live play was disabled; at least the practice play worked...for a time. We ultimately had to quit playing Kakooma. I used to be able to use my old app, but now with an updated phone, I only have the unreliable updated app. Please fix! This is such a cool way to practice math facts!

Judibatch ,


I am a second grade teacher and a HUGE fan of Kakooma. Every year I have introduced my class to the game and they love to play it both at home and at school. The new version does not work! I have the older versions on my own phone and ipad and they work fine. The new version that my students downloaded crashes when they hit the final answer. They are frustrated and losing interest. Can the new version of the app please be fixed?? Is there any way the old version can be made available in the app store until the new version can be fixed?

Wilsongamer360 ,

Terrible. Sorry, but crashes

I should give this a one star but since I haven’t ever had a chance to play it, I’m giving it a chance. I go and I press the game it takes 5-10 minutes to load. I go to live, I CANT, it then crashes and I have to go back in to the game. I go to practice this time. It goes to a start game page, then goes to a how to play page. I press start. CRASHES. Waste of my time! PLEASE FIX THIS


Big Hatch Inc
110.4 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like