Exercice 1: Calculer puis simplifier le résultat si possible :
A= 31/15 - 11/15 =
B= 16/21 + 26/21 =
C= 3 + 20/7 =
D= 2 - 5/9 =
E= 3/10 + 63/100 =
F= 22/15 - 4/3 =
G= 25/3 - 64/12 =
H= 26/21 + 3/7 =
Exercice 2 : Compléter les inégalités :
9/12 + ..../.... = 11/13
24/23 - ..../.... = 15/23
15/4 - ..../.... = 7/8
..../.... + 7/3 = 23/9
Exercice 3 : Calculer :
A= 3/23 x 11/2
B= 9/11 x 5/7
C= 19/7 x 2/3
D= 3/10 x 7/10
Merci de me répondre. C'est pas grave si vous ne trouvé pas tous.
A= 31/15 - 11/15 =
B= 16/21 + 26/21 =
C= 3 + 20/7 =
D= 2 - 5/9 =
E= 3/10 + 63/100 =
F= 22/15 - 4/3 =
G= 25/3 - 64/12 =
H= 26/21 + 3/7 =
Exercice 2 : Compléter les inégalités :
9/12 + ..../.... = 11/13
24/23 - ..../.... = 15/23
15/4 - ..../.... = 7/8
..../.... + 7/3 = 23/9
Exercice 3 : Calculer :
A= 3/23 x 11/2
B= 9/11 x 5/7
C= 19/7 x 2/3
D= 3/10 x 7/10
Merci de me répondre. C'est pas grave si vous ne trouvé pas tous.
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Verified answer
Exercice 1A= 31/15 - 11/15
A = 20/15
A = 5 x 4 / 5 x 3
A = 4/3
B= 16/21 + 26/21
B = 42/21
B = 21 x 2 / 21 x 1
B = 2
C= 3 + 20/7
C = 3 x 7 / 1 x 7 + 20/7
C = 21 + 21/7
C = 42/7
C = 7 x 6 / 7 x 1
C = 6
D= 2 - 5/9
D = 2 x 9 / 1 x 9 - 5/9
D = 18/9 - 5/9
D = 13/9
E= 3/10 + 63/100
E = 3 x 10 / 10 x 10 + 63/100
E = 30/100 + 63/100
E = 93/100
F= 22/15 - 4/3
F = 22/15 - 4 x 5 / 3 x 5
F = 22/15 - 20/15
F = 2/15
G= 25/3 - 64/12
G = 25 x 4 / 3 x 4 - 64/12
G = 100/12 - 64/12
G = 36/100
G = 4 x 9 / 4 x 25
G = 9/25
H= 26/21 + 3/7
H = 26/21 + 3 x 3 / 7 x 3
H = 26/21 + 9/21
H = 35/21
H = 7 x 5 / 7 x 3
H = 5/3
Exercice 2 : Compléter les inégalités :
9/12 + ..../.... = 11/13- Tu as dû faire une erreur dans l'énoncé
24/23 - 9/23 = 15/23
15/4 - 23/8 = 7/8
2/9 + 7/3 = 23/9
Exercice 3 : Calculer :
A= 3/23 x 11/2
A = 33/46
B= 9/11 x 5/7
B = 45/77
C= 19/7 x 2/3
C = 38/21
D= 3/10 x 7/10
D = 21/100