Mathématiques

Question

pouvez vous m aider merci
pouvez vous m aider merci

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2 Réponse

  • A = 27*101
    A = 27*(100+1)
    A = 27*100+27*1
    A = 2700+27
    A = 2727

    B = 99*57
    B = 57*(100-1)
    B = 57*100+57*(-1)
    B = 5700-57
    B = 5643

    C = 1002*53
    C = 53*(1000+2)
    C = 53*1000+53*2
    C = 53000+106
    C = 53106

    D = 998*24
    D = 24*(1000-2)
    D = 24*1000+24*(-2)
    D = 24000-48
    B = 23952

  • Bonjour


    A = 27 x 101
    A = 27 x (100 + 1)
    A = 27 x     100 + 27 x 1
    A = 2700 + 27
    A = 2 727

    B = 99 x 57
    B = 57 x (100 - 1)
    B = 57 x 100 + 57 x -1
    B = 5700 - 57
    B = 5 643

    C = 1002 x 53
    C = 53 x (1000 + 2)
    C = 53 x 1000 + 53 x 2
    C = 53 000 +106
    C = 53 106

    D = 998 x 24
    D = 24 x (1000-2)
    D = 24 x 1000 + 24 x (-2 )
    D = 24 000 - 48
    D = 23 952

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