Here’s a cool multiplication game that kids will love! Use LEGO bricks to build arrays. The first one to cover their baseplate wins!

This math activity is part of our LEGO Math Series. We’ve got all kinds of ideas for learning addition, subtraction, multiplication, measurement, graphing, and more with LEGO bricks.

Lego arrays multiplication game for kids

Supplies Needed:

  • 16 x 16 plates – one for each player
  • two dice – regular 6-sided dice, or use 12-sided math dice
  • Basic LEGO bricks in any color and any size

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How to Play the LEGO Arrays Multiplication Game:

This rules of this game are so simple, and yet it involves a lot of great multiplication fact practice.

Each player starts with an empty 16 x 16 plate.

The game starts with player 1 rolling both dice. Then, player 1 will build an array with the dimensions of the numbers rolled. For example, the player pictured below rolled two 3’s and built an array that is 3 studs by 3 studs.

This demonstrates that 3 x 3 = 9.

Lego arrays multiplication game

Play continues with player rolling the dice and building arrays with the dimensions they rolled.

In the board below, we’ve added 1 x 4 and 3 x 5.

The players will want to build their arrays right next to each other, with no open space in between. However, sometimes open spaces are unavoidable depending on the numbers rolled. That’s okay, though. You will eventually roll the numbers you need to fill in the hole!

Ending the Game:

The game ends when one player successfully covers their entire 16 x 16 plate.

We chose to make one change to the rules when we got near the end. Once we got down to nothing but spaces on our boards that were 1 stud wide, we designated one die as a permanent 1, and rolled only the other one. So then our options for arrays were only 1 x 1, 1 x 2, 1 x 3, etc.

Emphasize the Multiplication Practice!

As you play the game, practice each multiplication fact that is rolled.

“Oh, you rolled 4 and 6. What is 4 x 6? 24. This array will have 24 studs.”

You can make this game more challenging by using two 12-sided math dice. Then kids will be able to practice the multiplication facts up through the 12’s.

Need more LEGO Multiplication Ideas?

I REALLY love this 3D LEGO Multiplication Graph. Such a cool way to visualize what happens when you multiply!

Here’s another fun activity – LEGO Multiplication Towers.


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  1. Ellen Aug 29, 2022

    I wish I would have had this great idea when I was teaching. Another way for students to visualize and touch multiplying. Will use it for grandsons who are Lego fans. Have you used generic base plates; do the Legos fit? Thanks


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