Working systematically

  • Add to 200
    problem
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    Add to 200

    Age
    11 to 14
    Challenge level
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    By selecting digits for an addition grid, what targets can you make?

  • Forwards Add Backwards
    problem
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    Forwards add backwards

    Age
    11 to 14
    Challenge level
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    What happens when you add a three digit number to its reverse?

  • Perimeter Challenge
    problem
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    Perimeter challenge

    Age
    11 to 14
    Challenge level
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    Can you deduce the perimeters of the shapes from the information given?

  • About Average
    problem
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    About average

    Age
    11 to 14
    Challenge level
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    Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?

  • Half a minute
    problem
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    Half a minute

    Age
    11 to 14
    Challenge level
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    Anna, Ben and Charlie have been estimating 30 seconds. Who is the best?

  • Making a difference
    problem
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    Making a difference

    Age
    11 to 14
    Challenge level
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    How many different differences can you make?

  • Completing Quadrilaterals
    problem
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    Completing quadrilaterals

    Age
    11 to 14
    Challenge level
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    We started drawing some quadrilaterals - can you complete them?

  • Growing Surprises
    problem
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    Growing surprises

    Age
    11 to 14
    Challenge level
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    Can you find the connections between linear and quadratic patterns?

  • Gabriel's Problem
    problem
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    Gabriel's problem

    Age
    11 to 14
    Challenge level
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    Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?

  • Guess \my Quad
    problem
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    Guess my quad

    Age
    11 to 14
    Challenge level
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    How many questions do you need to identify my quadrilateral?