Multiplication and division

Use your logical thinking skills to deduce how much Dan's crisps and ice cream cost altogether.

This challenge combines addition, multiplication, perseverance and even proof.

This task combines spatial awareness with addition and multiplication.

Use 4 four times in a calculation. What answers can you get?

Look at what happens when you take a number, square it and subtract your answer. What kind of number do you get? Can you prove it?

In the binary number system, we only use the digits 0 and 1. What can you discover about this system?

Five children are taking part in a climbing competition with three parts, where their score for each part will be multiplied together. Can you see how the leaderboard will change depending on what happens in the final climb of the competition?

Given the products of adjacent cells, can you complete this Sudoku?