Visualising and representing

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

Try out these calculations. Are you surprised by the results?

Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?

The Number Jumbler can always work out your chosen symbol. Can you work out how?

Some of the numbers have fallen off Becky's number line. Can you figure out what they were?

I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?

Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?

Take three consecutive numbers and add them together. What do you notice?

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

We usually use squares to measure area, but what if we use triangles instead?