Calcul littéral - calcul mental 08

  

Voici des exercices de calcul littéral. Tu dois calculer mentalement la valeur de la lettre :

exemple : 6 + a = 10 ---> a est égal à 4 car 6 + 4 = 10

100 - a = 6
a =
100 - b = 20
b =
100 - c = 90
c =
100 - d = 0
d =
100 - e = 64
e =
100 - f = 14
f =
100 - g = 65
g =
100 - h = 19
h =
100 - i = 28
i =
100 - j = 100
j =
100 - k = 32
k =
100 - l = 89
l =
100 - m = 73
m =
100 - n = 2
n =
100 - o = 57
p =
100 - q = 85
q =
100 - r = 95
r =
100 - s = 44
s =
100 - t = 34
t =
100 - u = 60
u =
prénom :