Addition and subtraction

  • Dicey Addition
    problem
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    Dicey Addition

    Age
    5 to 11
    Challenge level
    1 out of 3

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

  • Take three numbers
    problem
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    Take Three Numbers

    Age
    5 to 11
    Challenge level
    1 out of 3

    What happens when you add three numbers together? Will your answer be odd or even?

  • Ordering cards
    problem
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    Ordering Cards

    Age
    5 to 11
    Challenge level
    1 out of 3

    This problem is designed to help children to learn, and to use, the two and three times tables.

  • Doing and undoing
    problem
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    Doing and Undoing

    Age
    5 to 11
    Challenge level
    1 out of 3

    This investigation involving the four operations looks at doing and undoing.

  • Interactive Balance
    interactivity
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    Interactive Balance

    Age
    5 to 11
    Challenge level
    1 out of 3

    In this simulation of a balance, you can drag numbers and parts of number sentences on to the trays. Have a play!

  • Five Coins
    problem
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    Five Coins

    Age
    5 to 11
    Challenge level
    2 out of 3

    Ben has five coins in his pocket. How much money might he have?

  • problem
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    The Puzzling Sweet Shop

    Age
    5 to 11
    Challenge level
    2 out of 3

    What could each of the children buy in the sweet shop?

  • Make 37 Poster
    problem
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    Make 37

    Age
    5 to 11
    Challenge level
    2 out of 3

    Four bags contain 1s, 3s, 5s and 7s. Can you pick ten numbers from the bags so that their total is 37?

  • Dicey Operations in Line
    game
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    Dicey Operations in Line

    Age
    7 to 11
    Challenge level
    1 out of 3

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

  • Doplication
    problem
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    Doplication

    Age
    7 to 11
    Challenge level
    1 out of 3

    We can arrange dots in a similar way to the 5 on a dice. What do you notice?