Powers and roots

  • St Ives
    article

    St Ives

    As I was going to St Ives, I met a man with seven wives. Every wife had seven sacks, every sack had seven cats, every cat had seven kittens. Kittens, cats, sacks and wives, how many were going to St Ives?

  • Pocket money
    problem

    Pocket money

    Age
    11 to 14
    Challenge level
    filled star empty star empty star
    Which of these pocket money systems would you rather have?