This big box multiplies anything that goes inside it by the same
number. If you know the numbers that come out, what
multiplication might be going on in the box? Work out Tom's
number from the answers he gives his friend. He will only answer
'yes' or 'no'. What is the lowest number which always leaves a
remainder of 1 when divided by each of the numbers from 2 to 10?
Can you work out what a ziffle is on the planet Zargon? 56 406
is the product of two consecutive numbers. What are these Can
you see how these factor-multiple chains work? Find the chain
which contains the smallest possible numbers. How about the
largest A game for 2 people using a pack of cards Turn over 2
cards and try to make an odd number or a multiple of 3. Which is
quicker, counting up to 30 in ones or counting up to 300 in
tens? Why? Ben’s class were making cutting up number tracks.
First they cut them into twos and added up the numbers on each
piece. What patterns could they see? On the planet Vuv there are
two sorts of creatures. The Zio