Comparing and ordering numbers

  • Largest Even
    problem

    Largest even

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?

  • Dotty Six
    problem

    Dotty six

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    Dotty Six is a simple dice game that you can adapt in many ways.

  • Light the Lights
    problem

    Light the lights

    Age
    5 to 7
    Challenge level
    filled star filled star empty star

    Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

  • I Like ...
    problem

    I like ...

    Age
    5 to 7
    Challenge level
    filled star empty star empty star

    Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

  • Sorting the Numbers
    problem

    Sorting the numbers

    Age
    5 to 11
    Challenge level
    filled star empty star empty star
    Complete these two jigsaws then put one on top of the other. What happens when you add the 'touching' numbers? What happens when you change the position of the jigsaws?
  • Sort them out (2)
    problem

    Sort them out (2)

    Age
    7 to 11
    Challenge level
    filled star empty star empty star
    Can you each work out the number on your card? What do you notice? How could you sort the cards?
  • 17s and 23s
    problem

    17s and 23s

    Age
    11 to 14
    Challenge level
    filled star filled star filled star
    Can you form this 2010-digit number...
  • Nice or Nasty
    problem

    Nice or nasty

    Age
    7 to 11
    Challenge level
    filled star empty star empty star

    There are nasty versions of this dice game but we'll start with the nice ones...

  • problem

    Venn diagrams

    Age
    5 to 11
    Challenge level
    filled star empty star empty star

    How will you complete these interactive Venn diagrams?

  • Magic Vs
    problem

    Magic Vs

    Age
    7 to 11
    Challenge level
    filled star empty star empty star

    Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?