Mental calculations

  • Compare the Calculations
    problem

    Compare the calculations

    Age
    7 to 11
    Challenge level
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    Can you put these four calculations into order of difficulty? How did you decide?

  • Picture Your Method
    problem

    Picture your method

    Age
    7 to 11
    Challenge level
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    Can you match these calculation methods to their visual representations?

  • Fruity Pairs
    problem

    Fruity pairs

    Age
    5 to 7
    Challenge level
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    Which two items of fruit could Kate and Sam choose? Can you order the prices from lowest to highest?

  • Let's Get Flexible!
    article

    Let's get flexible!

    In this article for primary teachers, Ems outlines how we can encourage learners to be flexible in their approach to calculation, and why this is crucial.

  • Tables Teaser
    problem

    Tables teaser

    Age
    5 to 7
    Challenge level
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    How will you work out which numbers have been used to create this multiplication square?

  • Six Numbered Cubes
    problem

    Six numbered cubes

    Age
    7 to 11
    Challenge level
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    This task combines spatial awareness with addition and multiplication.

  • Overlaps
    problem

    Overlaps

    Age
    11 to 14
    Challenge level
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    Can you find ways to put numbers in the overlaps so the rings have equal totals?

  • Double or Halve?
    problem

    Double or halve?

    Age
    5 to 7
    Challenge level
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    Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?

  • Difference Sudoku
    problem

    Difference Sudoku

    Age
    14 to 16
    Challenge level
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    Use the differences to find the solution to this Sudoku.