Being curious - number

What is the smallest number of answers you need to reveal in order to work out the missing headers?

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

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

Can you use the clues to complete these 5 by 5 Mathematical Sudokus?

How much can you read into a T-shirt?

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

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

Which set of numbers that add to 100 have the largest product?

Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?

A country has decided to have just two different coins, 3z and 5z coins. Which totals can be made? Is there a largest total that cannot be made? How do you know?

Follow this recipe for sieving numbers and see what interesting patterns emerge.

By selecting digits for an addition grid, what targets can you make?

Charlie and Abi put a counter on 42. They wondered if they could visit all the other numbers on their 1-100 board, moving the counter using just these two operations: x2 and -5. What do you think?

Caroline and James pick sets of five numbers. Charlie tries to find three that add together to make a multiple of three. Can they stop him?

There are lots of ideas to explore in these sequences of ordered fractions.

Can you work out what step size to take to ensure you visit all the dots on the circle?

Take a look at the video and try to find a sequence of moves that will untangle the ropes.

Take any four digit number. Move the first digit to the end and move the rest along. Now add your two numbers. Did you get a multiple of 11?

How many more miles must the car travel before the numbers on the milometer and the trip meter contain the same digits in the same order?

Imagine you were given the chance to win some money... and imagine you had nothing to lose...

Is there a relationship between the coordinates of the endpoints of a line and the number of grid squares it crosses?

What is the largest number which, when divided into these five numbers in turn, leaves the same remainder each time?