Mental calculations

  • Criss Cross Quiz
    game

    Criss cross quiz

    Age
    7 to 11
    Challenge level
    filled star empty star empty star

    A game for 2 players. Practises subtraction or other maths operations knowledge.

  • Subtraction Squares
    game

    Subtraction squares

    Age
    5 to 11
    Challenge level
    filled star filled star empty star

    A game for 2 players. Using 2 dice, some counters and a games board, can you form a line of counters from one side of the board to the other?

  • Pass the Peas, Please
    game

    Pass the peas, please

    Age
    5 to 7
    Challenge level
    filled star filled star filled star

    A game for 2 or more players. Practise your addition and subtraction with the aid of a game board and some dried peas!

  • Down to Nothing
    game

    Down to nothing

    Age
    7 to 11
    Challenge level
    filled star empty star empty star

    A game for 2 or more people. Starting with 100, subratct a number from 1 to 9 from the total. You score for making an odd number, a number ending in 0 or a multiple of 6.

  • Fifteen
    game

    Fifteen

    Age
    7 to 14
    Challenge level
    filled star filled star empty star

    Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.

  • Domino Magic Rectangle
    game

    Domino magic rectangle

    Age
    7 to 16
    Challenge level
    filled star filled star filled star

    An ordinary set of dominoes can be laid out as a 7 by 4 magic rectangle in which all the spots in all the columns add to 24, while those in the rows add to 42. Try it! Now try the magic square...

  • Build it up
    problem

    Build it up

    Age
    7 to 11
    Challenge level
    filled star empty star empty star

    Can you find all the ways to get 15 at the top of this triangle of numbers? Many opportunities to work in different ways.