Multiplication and division

  • Sending Cards
    problem

    Sending cards

    Age
    7 to 11
    Challenge level
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    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
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    Find a great variety of ways of asking questions which make 8.

  • Pebbles
    problem

    Pebbles

    Age
    7 to 11
    Challenge level
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    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
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    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.
  • Multiplication Series: Illustrating Number Properties with Arrays
    article

    Multiplication series: illustrating number properties with arrays

    This article for teachers describes how modelling number properties involving multiplication using an array of objects not only allows children to represent their thinking with concrete materials, but it can also assist them in forming useful mental pictures to support memory and reasoning.
  • Dicey Operations in Line
    game
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    Dicey operations in line

    Age
    7 to 11
    Challenge level
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    In these addition, subtraction, multiplication and division games, you'll need to think strategically to get closest to the target.