Cracking Codes

Current

Cracking Codes

When a secret agent wants to send a message, they write it in code so their enemies can't read it. Codebreakers need to develop mathematical skills like working backwards, being systematic, and ruling out possibilities in order to crack enemy codes and save the day. These problems will give you the chance to train your brain in order to become a better code cracker!
Satisfying Statements link

Satisfying Statements 

Stage: 3 Challenge Level: Challenge Level:1

Can you find any two-digit numbers that satisfy all of these statements?

Statement Snap link

Statement Snap 

Stage: 2 and 3 Challenge Level: Challenge Level:1

You'll need to know your number properties to win a game of Statement Snap...

Charlie's Delightful Machine link

Charlie's Delightful Machine 

Stage: 3 and 4 Challenge Level: Challenge Level:1

Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?

A Little Light Thinking link

A Little Light Thinking 

Stage: 4 Challenge Level: Challenge Level:1

Here is a machine with four coloured lights. Can you make two lights switch on at once? Three lights? All four lights?