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Number Code Breaking Practice 2

In this practice exercise, students will turn words into number codes using multiple words and codes to find and apply the pattern. It will develop their encoding and problem-solving skills under timed conditions.

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'Number Code Breaking Practice 2' worksheet

Key stage:  KS 2

Year:  Year 5 11+ worksheets

Curriculum topic:   Exam-Style Questions: Verbal Reasoning

Curriculum subtopic:   Exam-Style Questions: Number Code Breaking

Difficulty level:  

Worksheet Overview

The following activity is a practice exercise to help you measure your success under timed conditions. 

If you are unsure of an answer move on to the next question.  You should come back to questions you found difficult at the end if you have time.  


Here is a list of words:


Here are some codes for the above words. They are not in order:

0473     2741    2470     8935

Using this information, what would be the code for DRINK?


To work this out you need to follow three steps:

First, match each word to its corresponding code using numbers that appear more than once.

Secondly, work out what each letter is in code.

Thirdly, work out the word, in this case DRINK, using the code you have found.


So let’s give it a try!

There are two codes beginning with the number 2. Do we have any words starting with the same letter?

We have two words starting with the letter C, so 2 must represent C (2=C).


We have two codes with the number 4 in the second letter position. Which letter appears in the second letter position twice? 4 must be the letter A (4=A).


We now have enough information to match each word to a code, giving us:

DARK = 0473

CRAB = 2741

CARD = 2470

INKS = 8935

So D = 0, R = 7, I = 8, N = 9, K = 3.

If we use this code on the word DRINK, we get the answer of 07893.

Now it's time to begin this practice exercise.  Good Luck!

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