Loading please wait

The smart way to improve grades

Comprehensive & curriculum aligned

Try an activity or get started for free

Identify Double Letter Codes

In this worksheet, students will identify a double letter code by identifying common features among images.

This content is premium and exclusive to EdPlace subscribers.

'Identify Double Letter Codes' worksheet

Key stage:  KS 2

Year:  Year 4 11+ worksheets

Curriculum topic:   Spatial and Non-Verbal Reasoning

Curriculum subtopic:   Find the Missing Code

Difficulty level:  

Worksheet Overview

Get ready to be a code breaker!


Each of the shapes below has a matching code. We need to crack the code and then apply it to an extra shape.



In this type of question, the first thing we need to look for is a letter that appears as a code more than once.

We can see the letter B twice. What do both of these shapes have in common?

They are both white faces with no shading, so the letter B must be used at the start of the code if the smiley face has no shading.

This means that a letter R at the start of the code must mean that the face is shaded.


What feature could the letter T refer to?

Both images with a T in their code have triangles on their heads. This must mean that letter T is the code to show a triangular ‘hat’, whereas S must mean a square ‘hat’.


The final image is shaded so it will start with an R and it has a square ‘hat’ so it will end with an S.

So the correct answer is RS.


Let’s try another one:

Which code should be given to the final shape?



Let’s look for a letter that appears as a code more than once…That’s right, we can see the letter S twice.

What do both of the images linked by the letter S have in common?

They both have squares as the outside shape, so S must indicate that the outside shape is a square.

This means that M indicates a triangle as the outside shape and T indicates a circle.

So our final image must start with a T as the outside shape is a circle.


P appears as the second letter when the cross is not shaded and L appears when the cross is shaded.


Our final image needs to be given the code TP.

T for the outside circle and P for having an unshaded cross.


It’s now your turn to crack some codes!

Good luck detective.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started

Try an activity or get started for free