Mathématiques

Question

Bonsoir à tous et à toute : J'ai des exercices de maths :

Priorités et calculs Fractionnaire:

A =3/2 + 4/5
B =13/15 - 3/5
C =35/4 × - 28/5
D =7/10 : 3/5

E =( 12/7 + 8/7 ) × 4/5
F = 5/8 × (3/4 + 7/4 )
G = 7 × (3 + 5/7 )

H = ( 1/2 + 3/4 ): 2/3
I = ( 12/7 + 8/7 ): (7/5 - 1/5 )
J = 1 - (1/6 + 5/12 )

K = 2/3 × 7/5 - 4/125
L = 3/4 : 4/5 + 7/2
M = 1/2 + 5/2 × 7/10

N = 4/7 + 15/7 : 5/2
O = 1 - 5/2 × 4/15
P = 2/7 + 5/14 × ( 2/3 + 1/3 )



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2 Réponse

  • A = 3/2 + 4/5 = 15/10 + 8/10 = 23/10

    B = 13/15 - 9/15 = 4/15

    C = 35/4 x (-28/5) = -7/4 x 28 = -7 x 7 = -49

    D = 7/10 x 5/3 = 7/2 x 1/3 = 7/6

    E = 20/7 x 4/5 = 4/7 x 4 = 16/7

    F = 5/8 x 10/4 = 5/8 x 5/2 = 25/16

    G = 7 x ( 21/7 + 5/7 ) = 7 x 26/7 = 26

    H = ( 2/4 + 3/4 ) x 3/2 = 5/4 x 3/2 = 15/8

    I = 20/7 x 5/6 = 10/7 x 5/3 = 50/21

    J = 12/12 - 2/12 - 5/12 = 12/12 - 7/12 = 5/12

    K = 14/15 - 4/125 = 350/375 - 12/375 = 338/375

    L = 3/4 x 5/4 + 7/2 = 15/16 + 7/2 = 15/16 + 56/16 = 71/16

    M = 1/2 + 5/2 x 7/10 = 1/2 + 1/2 x 7/2 = 2/4 + 7/4 = 9/4

    N = 4/7 + 15/7 x 2/5 = 4/7 + 3/7 x 2 = 4/7 + 6/7 = 10/7

    O = 1 - 1/2 x 4/3 = 1  - 2/3 = 3/3 - 2/3 = 1/3

    P = 2/7 + 5/14 x 1 = 4/14 + 5/14 = 9/14

  • Bonsoir,

    Priorités et calculs Fractionnaires :

    A =3/2 + 4/5

    A = (3 x 5)/(2 x 5) + (4 x 2)/(5 x 2)

    A = 15/10 + 8/10

    A = 23/10


    B =13/15 - 3/5

    B = 13/15 - (3 x 3)/(3 x 5)

    B = 13/15 - 9/15

    B = 4/15


    C =35/4 × - 28/5

    C = 35/5 x -28/4

    C = 7 x -7

    C = -49


    D =7/10 : 3/5

    D = 7/10 x 5/3

    D = 5/10 x 7/3

    D = 1/2 x 7/3

    D = 7/6


    E =( 12/7 + 8/7 ) × 4/5

    E = 20/7 x 4/5

    E = 20/5 x 4/7

    E = 4 x 4/7

    E = 16/7


    F = 5/8 × (3/4 + 7/4 )

    F = 5/8 x 10/4

    F = 5/8 x 5/2

    F = 25/16


    G = 7 × (3 + 5/7 )

    G = 7 x (21/7 + 5/7)

    G = 7 x 26/7

    G = 26


    H = ( 1/2 + 3/4 ): 2/3

    H = (2/4 + 3/4) x 3/2

    H = 5/4 x 3/2

    H = 15/8


    I = ( 12/7 + 8/7 ): (7/5 - 1/5 )

    I = 20/7 : (6/5)

    I = 20/7 x 5/6

    I = 20/6 x 5/7

    I = 10/3 x 5/7

    I = 50/21


    J = 1 - (1/6 + 5/12 )

    J = 1 - (2/12 + 5/12)

    J = 12/12 - 7/12

    J = 5/12


    K = 2/3 × 7/5 - 4/125

    K = 14/15 - 4/125

    K = 350/375 - 12/375

    K = 338/375


    L = 3/4 : 4/5 + 7/2

    L = 3/4 x 5/4 + 56/16

    L = 15/16 + 56/16

    L = 71/16


    M = 1/2 + 5/2 × 7/10

    M = 2/4 + 7/4

    M = 9/4


    N = 4/7 + 15/7 : 5/2

    N = 4/7 + 15/7 x 2/5

    N = 4/7 + 6/7

    N = 10/7


    O = 1 - 5/2 × 4/15

    O = 1 - 2/3

    O = 3/3 - 2/3

    O = 1/3


    P = 2/7 + 5/14 × ( 2/3 + 1/3 )

    P = 2/7 + 5/14 x 3/3

    P = 4/14 + 5/14

    P = 9/14

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Bonjour, dans 6 083 472 quelle est est ne nombre des centaines de mille