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math

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Multiply in the indicated base
144 and 5 x 43 and 5

  • math -

    You could change to base 10 and then convert your answer.

    1445= 1(5^2) + 4(5) + 4 = 49
    43 = 4(5)+3 = 23

    49x23 = 1127
    1127 = 1(625) + 4(125) + 0(25) + 0(5) + 2
    = 140025

    or

    create a multiplication table in base 5

    x 1 2 3 4
    1 1 2 3 4
    2 2 8 11 13
    3 3 11 14 22
    4 4 13 22 31

    so
    144
    x43
    ---------
    1042
    1242
    ------
    14002

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