Addition and subtraction

  • Small tomato seedlings in pink pots.
    problem

    Bus Route

    Age
    11 to 14
    Challenge level
    1 out of 3

    How far apart are the first and last bus stops in this bus route?

  • Small tomato seedlings in pink pots.
    problem

    Debasing the Coinage

    Age
    11 to 14
    Challenge level
    1 out of 3

    How much lighter will £5 worth of 5p's be with these new lighter coins?

  • Small tomato seedlings in pink pots.
    problem

    Highs and Lows

    Age
    11 to 14
    Challenge level
    1 out of 3

    What were the maximum and minimum temperatures recorded in my max/min thermometer?

  • 3388
    problem

    3388

    Age
    11 to 14
    Challenge level
    2 out of 3

    Using some or all of the operations of addition, subtraction, multiplication and division and using the digits 3, 3, 8 and 8 each once and only once make an expression equal to 24.

  • Aba
    problem

    Aba

    Age
    11 to 14
    Challenge level
    2 out of 3

    In the following sum the letters A, B, C, D, E and F stand for six distinct digits. Find all the ways of replacing the letters with digits so that the arithmetic is correct.

  • Eleven
    problem

    Eleven

    Age
    11 to 14
    Challenge level
    2 out of 3

    Replace each letter with a digit to make this addition correct.

  • Clocked
    problem

    Clocked

    Age
    11 to 14
    Challenge level
    2 out of 3

    Is it possible to rearrange the numbers 1,2......12 around a clock face in such a way that every two numbers in adjacent positions differ by any of 3, 4 or 5 hours?

  • Small tomato seedlings in pink pots.
    problem

    Rolling Along the Trail

    Age
    11 to 14
    Challenge level
    2 out of 3

    What could be the scores from five throws of this dice?

  • Football Sum
    problem

    Football Sum

    Age
    11 to 14
    Challenge level
    2 out of 3

    Find the values of the nine letters in the sum: FOOT + BALL = GAME

  • Pair Sums
    problem

    Pair Sums

    Age
    11 to 14
    Challenge level
    3 out of 3

    Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?