Kahoot! Big Numbers: DragonBox 4+

Long addition and subtraction

Kahoot ASA

    • 4.6 • 395 Ratings
    • Free
    • Offers In-App Purchases



Kahoot! Big Numbers by DragonBox is an award-winning math learning game that makes it easy for kids to master the math behind BIG numbers.

Kids as young as 6 can learn how the base-ten system works and how to perform long additions and subtractions.


Access to the contents and functionality of this app requires a subscription to Kahoot!+ Family. The subscription starts with a 7 day free trial and can be cancelled at any time before the end of the trial.

The Kahoot!+ Family subscription gives your family access to premium Kahoot! features and 3 award-winning learning apps for math and reading.


Kahoot! Big Numbers by DragonBox takes your child on an adventure to the magical land of Noomia. Your child will have to gather and trade resources to acquire new items and unlock new worlds.

To advance in the game, your child must add and subtract to manage their resources. Over the course of the game, quantities will get larger and operations will get harder.

Your child will have to perform 1000s of operations and gain complete mastery of long additions and subtractions to complete the game.


- An innovative interface that makes solving long additions and subtractions easy

- An infinite amount of additions and subtractions to solve.

- Over 10 hours of engaging gameplay

- No reading required

- 6 worlds to explore

- Learn to count in different languages

- 10 Different resources to collect and trade

- 4 Noom houses to furnish and decorate

- No third-party advertising

- No in-app purchases

Kahoot! Big Numbers by DragonBox is based on the same pedagogical principles as the other games in the award-winning DragonBox series, and works by integrating the learning seamlessly into the gameplay, no quizzes or mindless repetitions. Every interaction in Kahoot! Big Numbers by DragonBox is designed to heighten your child’s understanding of mathematics while motivating them to keep learning through play and exploration.

Terms and Conditions: https://kahoot.com/terms-and-conditions/
Privacy Policy https://kahoot.com/privacy-policy/

What’s New

Version 1.4.9

Hot off the press in the latest update:
- Whether you’d like to purchase Kahoot! Big Numbers by DragonBox as a standalone app or enjoy a Kahoot!+ Family subscription - the choice is yours! Select the option that suits your needs best.
- Our brand new hub will help you easily access all learning apps included in your Kahoot!+ Family subscription and discover engaging games.
- Account creation is now optional. Sign-up for a Kahoot!+ Family account to get access to a 7-day free trial, all our learning apps, premium Kahoot! features, the possibility to create multiple profiles, and play games on all supported devices.

Ratings and Reviews

4.6 out of 5
395 Ratings

395 Ratings

child's review ,

Note from the kid

I’m having a lot of fun doing this great game

Developer Response ,

Hello! Happy to see that you like the app! Thank you very much for the review :)

MikeVerb ,

Great math game, one flaw

I and my 5yo really love this game. It does a great job of being fun and engaging while inserting solid lessons of big number addition and subtraction.

Only reason I docked it one star was due to one aspect toward the end where there's essentially a mini gambling station that is actually rigged in favor of the player (despite appearing to be "fair" odds). I think this one aspect teaches a bad lesson to kids. A) exposes them to gambling at all and B) teaches them that it's easy to win at it! This whole station could so easily be replaced by a bank or something where you could put your gold into a savings account like thing and wait X time and get more back out. It would accomplish the same goal of giving the player more gold, but would do it with a positive message.

Developer Response ,

Thanks for the feedback! I've shared your message to the relevant team.

ste@7 ,


I am enjoying this app! My goal is now to get six fish.

App Privacy

The developer, Kahoot ASA, 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 Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

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


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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