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Instructions: Use the arrow keys (or swipe) to move the tiles. When two tiles with the same number touch, they merge into one tile to make a double. What is the largest double you can make?

Trophies are available for creating tiles of the following values:

128 - Level 1 trophy
256 - Level 2 trophy
512 - Level 3 trophy
1024 - Level 4 trophy
2048 - Level 5 trophy

# Double Take

Learn the powers of two up to 2048!

#### Three Ways

Can you get to the target number by multiplying together four different one digit numbers? Can you do it in three different ways? There are nine levels to this online challenge and a virtual Transum Trophy available for each level.

Learning the sequence of doubling numbers (powers of two) is a worthwhile pursuit for children of all ages. This game is lots of fun to play, does not require the player to already know the doubling sequence, but presents the numbers in context and in a way that will help the child learn and recognise them.

Play the game little and often! Do not spend hours and hours playing but do spend ten minutes every day working to improve your score. Your personal best score is shown at the top right of the screen and this provides a target for you to try and beat. Earn trophies as you achieve the high score tiles.

Enjoy playing the game and learning more mathematics as you do.

Comment recorded on the 8 May 'Starter of the Day' page by Mr Smith, West Sussex, UK:

"I am an NQT and have only just discovered this website. I nearly wet my pants with joy.
To the creator of this website and all of those teachers who have contributed to it, I would like to say a big THANK YOU!!! :)."

Comment recorded on the 25 June 'Starter of the Day' page by Inger.kisby@herts and essex.herts.sch.uk, :

"We all love your starters. It is so good to have such a collection. We use them for all age groups and abilities. Have particularly enjoyed KIM's game, as we have not used that for Mathematics before. Keep up the good work and thank you very much
Best wishes from Inger Kisby"

#### Don't Shoot The Square

You will need to be quick on the draw to shoot all of the numbers except the square numbers. So far this activity has been accessed 57808 times and 473 people have earned a Transum Trophy for completing it.

This game is adapted from code created by Gabriele Cirulli based on 1024 by Veewo Studio and conceptually similar to Threes by Asher Vollmer. The details of the copyright notice can be seen here.

In the video below Steve Mould and James Grime discuss 2048 strategy and Maths.

Mr Fontuse,

Wednesday, February 10, 2021

"Keep in mind you can achieve numbers higher than 2048 I have actually managed to reach 4096. The language used on the webpage implies the game ends after reaching 2048 and trophies aren't tracked for numbers higher than 2048 and this all irks me."

 Level 1 Level 2 Level 3 Level 4 Level 5

Bar chart showing the number of trophies earned claimed for each level

#### Number Crunch Saga

A lively numeracy game requiring you to align three numbers to create the given target sum or product.

Transum.org/go/?to=saga

#### Remainder Race

A game involving chance and choice requiring an ability to calculate remainders.

Transum.org/go/?to=remainder

#### Sum Game

A game against the clock to find the numbers which add up to the target number.

Transum.org/go/?to=sumgame

#### Discombobulated

A fun game requiring you to find numbers which add up to the target number as quickly as possible.