Mathématiques

Question

d 3.5 -4.2+6.5-3.5+5
e 25.2+12-4.8+24-3.4
f 13+15+7-15
g -8+4+18-2+12+6
h 4.3-7.4+4-2.25+6.5+3.4-2.75
i  2.5+4.8-3.6+0.2+2.5
(-3+9)-(4-11)-(-5-6)
s -3+12-(13-8)-(3+8)
t -3-crocher 4-(3-9)crocher

1 Réponse

  • 3.5 - 4.2 + 6.5 - 3.5 + 5
    = 7.3

    25.2 + 12 - 4.8 + 24 - 3.4
    = 53

    13 + 15 + 7 - 15
    = 20

    - 8 + 4 + 18 -  2 + 12 + 6
    = 30

    4.3 - 7.4 + 4 - 2.25 + 6.5 + 3.4 - 2.75
    = 5.8

    2.5 + 4.8 - 3.6 + 0.2 + 2.5
    = 6.4

    (- 3 + 9) - (4 - 11) - (- 5 - 6)
    = 6 - (- 7) - (- 11)
    = 6 + 7 + 11
    = 24

    - 3 + 12 - (13 - 8) - (3 + 8)
    = - 3 + 12 - 5 - 11
    = - 7

    - 3 - [4 - (3 - 9)]
    = - 3 - [4 - (- 6)]
    = - 3 - (4 + 6)
    = - 3 - 10
    = - 13

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