Being collaborative

  • Hundred Square Poster
    problem
    Favourite

    Hundred Square

    Age
    5 to 11
    Challenge level

    A hundred square has been printed on both sides of a piece of paper. What is on the back of 100? 58? 23? 19?

  • Growing Garlic
    problem
    Favourite

    Growing Garlic

    Age
    5 to 11
    Challenge level

    Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?

  • Roman Numerals
    problem
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    Roman Numerals

    Age
    7 to 11
    Challenge level

    When are Roman numerals shorter than Arabic numerals for the same number?

  • Tumbling Down
    problem
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    Tumbling Down

    Age
    7 to 11
    Challenge level

    Watch this animation. What do you see? Can you explain why this happens?

  • Dicey Operations in Line
    game
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    Dicey Operations in Line

    Age
    7 to 11
    Challenge level

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

  • problem
    Favourite

    Sweets in a Box

    Age
    7 to 11
    Challenge level

    How many different shaped boxes can you design for these sweets?

  • Highest and Lowest
    problem
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    Highest and Lowest

    Age
    7 to 11
    Challenge level

    Put operations signs between the numbers 3, 4, 5 and 6. What answers can you make?

  • problem
    Favourite

    How Many Times?

    Age
    7 to 11
    Challenge level

    On a digital 24 hour clock, at certain times, all the digits are consecutive. How many times like this are there between midnight and 7 a.m.?

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