Reading, writing and representing numbers

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

What do you see as you watch this video? Can you create a similar video for the number 12?

Can you find some examples when the number of Roman numerals is fewer than the number of Arabic numerals for the same number?

I added together some of my neighbours' house numbers. Can you explain the patterns I noticed?

Can you find different ways of showing the same number? Try this matching game and see!

Using balancing scales what is the least number of weights needed to weigh all integer masses from 1 to 1000? Placing some of the weights in the same pan as the object how many are needed?

Can you explain how Galley Division works?

Read this riddle and see if you can work out how the trees must be planted.

What could these drawings, found in a cave in Spain, represent?