Addition and subtraction

  • Big Dog, Little Dog
    problem

    Big Dog, Little Dog

    Age
    5 to 7
    Challenge level
    Woof is a big dog. Yap is a little dog. Emma has 16 dog biscuits to give to the two dogs. She gave Woof 4 more biscuits than Yap. How many biscuits did each dog get?
  • Starfish Spotting
    problem

    Starfish Spotting

    Age
    5 to 7
    Challenge level

    How many starfish could there be on the beach, and how many children, if I can see 28 arms?

  • An arrangement of dominoes.
    problem

    Domino Join Up

    Age
    5 to 7
    Challenge level

    Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?

  • Mrs Beeswax
    problem

    Mrs Beeswax

    Age
    5 to 7
    Challenge level

    In how many ways could Mrs Beeswax put ten coins into her three puddings so that each pudding ended up with at least two coins?

  • Routes 1 and 5
    problem

    Routes 1 and 5

    Age
    5 to 7
    Challenge level

    Find your way through the grid starting at 2 and following these operations. What number do you end on?

  • Pass the Peas, Please
    game

    Pass the Peas, Please

    Age
    5 to 7
    Challenge level

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

  • Here to There 1 2 3
    problem

    Here to There 1 2 3

    Age
    5 to 7
    Challenge level

    Move from the START to the FINISH by moving across or down to the next square. Can you find a route to make these totals?

  • Twizzle's Journey
    problem

    Twizzle's Journey

    Age
    5 to 7
    Challenge level

    Twizzle, a female giraffe, needs transporting to another zoo. Which route will give the fastest journey?

  • Number Squares
    problem

    Number Squares

    Age
    5 to 11
    Challenge level

    Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?

  • Alphabet Blocks
    problem

    Alphabet Blocks

    Age
    5 to 11
    Challenge level

    These alphabet bricks are painted in a special way. A is on one brick, B on two bricks, and so on. How many bricks will be painted by the time they have got to other letters of the alphabet?

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