Addition and subtraction

  • Shut the box
    problem
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    Shut the Box

    Age
    5 to 7
    Challenge level
    1 out of 3

    An old game with lots of arithmetic!

  • Sort them out (1)
    problem
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    Sort Them Out (1)

    Age
    5 to 7
    Challenge level
    1 out of 3

    Can you each work out the number on your card? What do you notice? How could you sort the cards?

  • Even and odd
    problem
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    Even and Odd

    Age
    5 to 7
    Challenge level
    1 out of 3

    This group activity is all about representing and adding odd and even numbers.

  • problem
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    Pairs of Numbers

    Age
    5 to 7
    Challenge level
    1 out of 3

    Which numbers can you put into pairs that add to 10? Which ones do you have to leave out?

  • The add and take-away path
    problem
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    The Add and Take-Away Path

    Age
    5 to 7
    Challenge level
    1 out of 3

    What score can you get on the add and take-away path?

  • What was in the Box?
    problem
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    What Was in the Box?

    Age
    5 to 7
    Challenge level
    1 out of 3

    This box does something to the numbers that go into it. What might be happening inside the box?

  • What Could \It Be?
    problem
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    What Could It Be?

    Age
    5 to 7
    Challenge level
    1 out of 3

    In this calculation, the box represents a missing digit. What could the digit be?

  • Double or Halve?
    problem
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    Double or Halve?

    Age
    5 to 7
    Challenge level
    1 out of 3

    Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?

  • Two red apples.
    problem
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    Fruity Pairs

    Age
    5 to 7
    Challenge level
    1 out of 3

    Which two items of fruit could Kate and Sam choose? What would it cost?