Addition and subtraction

  • Eggs in Baskets
    problem
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    Eggs in Baskets

    Age
    5 to 7
    Challenge level
    2 out of 3

    There are three baskets holding a total of 10 eggs. How many eggs are in each basket?

  • The Tall Tower
    problem
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    The Tall Tower

    Age
    5 to 7
    Challenge level
    2 out of 3

    As you come down the ladders of the Tall Tower you collect useful spells. How many can you collect?

  • Finding Fifteen
    problem
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    Finding Fifteen

    Age
    5 to 7
    Challenge level
    2 out of 3

    Tim had nine cards. How could he have put them into three piles so that the total in each pile was 15?

  • Ring a Ring of Numbers
    problem
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    Ring a Ring of Numbers

    Age
    5 to 7
    Challenge level
    2 out of 3

    Choose four numbers to put in the squares so that the differences between joined squares are odd.

  • Domino Pick
    problem
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    Domino Pick

    Age
    5 to 7
    Challenge level
    2 out of 3

    Are these domino games fair? Can you explain why or why not?

  • Making Longer, Making Shorter
    problem
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    Making Longer, Making Shorter

    Age
    5 to 7
    Challenge level
    2 out of 3

    Ahmed is making rods using different numbers of cubes. Which rod is twice the length of his first rod?

  • Secret Number
    problem
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    Secret Number

    Age
    5 to 7
    Challenge level
    2 out of 3

    Annie and Ben are playing a game with a calculator. What was Annie's secret number?

  • problem
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    Caterpillars

    Age
    5 to 7
    Challenge level
    2 out of 3

    What number patterns can you see in the different arrangements of these caterpillars?

  • Find the Difference
    problem
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    Find the Difference

    Age
    5 to 7
    Challenge level
    2 out of 3

    Place numbers in the circles so that each number is the difference between the two numbers below it.

  • Five Steps to 50
    problem
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    Five Steps to 50

    Age
    5 to 7
    Challenge level
    2 out of 3

    Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?