Multiplication and division

  • Month Mania
    problem

    Month mania

    Age
    5 to 11
    Challenge level
    filled star filled star empty star
    Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?
  • Dice and Spinner Numbers
    problem

    Dice and spinner numbers

    Age
    7 to 11
    Challenge level
    filled star filled star empty star
    If you had any number of ordinary dice, what are the possible ways of making their totals 6? What would the product of the dice be each time?
  • Sending Cards
    problem

    Sending cards

    Age
    7 to 11
    Challenge level
    filled star empty star empty star
    This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?
  • I'm Eight
    problem

    I'm eight

    Age
    5 to 11
    Challenge level
    filled star empty star empty star
    Find a great variety of ways of asking questions which make 8.
  • Pebbles
    problem

    Pebbles

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

    Place four pebbles on the sand in the form of a square. Keep adding as few pebbles as necessary to double the area. How many extra pebbles are added each time?

  • Exploring Wild & Wonderful Number Patterns
    problem

    Exploring wild and wonderful number patterns

    Age
    7 to 11
    Challenge level
    filled star empty star empty star
    EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
  • Numbers Numbers Everywhere!
    article

    Numbers numbers everywhere!

    Bernard Bagnall recommends some primary school problems which use numbers from the environment around us, from clocks to house numbers.
  • Difficulties with Division
    article

    Difficulties with division

    This article for teachers looks at how teachers can use problems from the NRICH site to help them teach division.