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?
Investigate how you can work out what day of the week your birthday will be on next year, and the year after...
Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
