Mathsenligne.net NOMBRES EN ECRITURE FRACTIONNAIRE EXERCICE 2A EXERCICE 1
Donner le résultat en écriture fractionnaire : A = 2
3 4 5 A = 8
15
B = 4 3 2
7 C = 1
9 7
2 D = 11
7 3
8 E = 5
2 15 8
F = 7
13 2 G = 2 5 9
5 H = 7
6 7
9 I = 5 8
13 J = 7
2 3 17
K = 11 4 9
13 L = 5
7 6
5 M = 4 17
21 N = 4
11 9
5 O = 13
2 2 19
P = 2 9
2 Q = 9 4
25 R = 7
6 1
4 S = 14
3 3
5 T = 4
5 10
U = 2 7 5
11 2 V = 6
7 14 5
7 W = 2
46 23 7 3
2 X = 22 4 11 3
5 Y = 10
9 11 3 2
EXERCICE 2
Simplifier puis calculer comme dans les exemples (merci d’entourer les nombres au lieu de les barrer) :
A = 2 3 3
7 5 11 A = 2 5
7 11 A = 10
77
B = 13 5 3
11 1 63 B = 13 1
5 11 3 B = 13
88
C = 3 5 13
7 5
2 D = 4
3 2 7 7
5 E = 3
2 2 5 3
11
F = 7 5 7
11 5
3 G = 7
5 5 6 11
7 H = 7
3 3 2 2
7 I = 2 3 5
2 3 11 11
5 J = 4 7 3 5
4
K = 5 3 5
7 2
7 L = 4
3 3 20 11
7 M = 11
14 7 11
3 N = 8
7 1 5 11
4 O = 2 3 4
5 6 7 8
9 0 11
Mathsenligne.net NOMBRES EN ECRITURE FRACTIONNAIRE EXERCICE 2A
CORRIGE – M. QUET
EXERCICE 1A = 2 3 4
5 A = 8
15
B = 4 3 2
7
4 2 8 B 3 7 21
C = 1 9 7
2
1 7 7 C 9 2 18
D = 11 7 3
8
11 3 33 D 7 8 56
E = 5 2 15
8
5 15 75 E 2 8 16
F = 713 2
7 2 14 F 13 1 13
G = 2 5 9
5
2 9 18 G 5 5 25
H = 7 6 7
9
7 7 49 H 6 9 54
I = 5 8 13
5 8 40 I 1 13 13
J = 7 2 3
17
7 3 21 J 2 17 34
K = 114 9 13
11 9 99 K 4 13 52
L = 5 7 6
5
5 6 6 L 7 5 7
M = 4 17 21
4 17 68 M 1 21 21
N = 4 11 9
5
4 9 36 M 11 5 55
O = 13 2 2
19
13 2 13 O 2 19 19
P = 2 92
P 2 9 9
1 2
Q = 9 4 25
9 4 36 Q 1 25 25
R = 7 6 1
4
7 1 7 R 6 4 24
S = 14 3 3
5
14 3 14 S 3 5 5
T = 4 5 10
T 4 10
5 1
4 2 5
T 8
5 1
U = 27 5 11 2
2 5 2 20 U 7 11 77
V = 6
7 14 5 7
6 14 5 V 7 1 7
6 2 7 5 V 7 1 7
V 60
7
W = 2 46 23
7 3 2
2 23 3 W 46 7 2
2 23 3 W 2 23 7 2
W 3
14
X = 22 4 11 3
5
22 4 3 X 1 11 5
11 2 4 3 X 1 11 5
X 24
5
Y = 10
9 11 3 2
10 11 3 Y 9 1 2
5 2 11 3 Y 3 3 1 2
Y 55
3
EXERCICE 2A = 2 3 3
7 5 11 A = 2 5
7 11 A = 10
77
B = 13 5 3
11 1 63 B = 13 1
5 11 3 B = 13
88
C = 3 5 13
7 5 2
3 13 5 C 5 7 2
C 39
14
D = 4 3 2
7 7 5
4 2 7 D 3 7 5
D 8
15
E = 3 2 2
5 3 11
3 2 3 E 2 5 11
E 9
55
F = 75 7 11 5
3
7 7 5 F 5 11 3
F 49
33
G = 7 5 5
6 11 7
7 5 11 G 5 6 7
G 11
6
H = 7 3 3
2 2 7
7 3 2 H 3 2 7
H 1
I = 2 3 5
2 3 11 11
5
2 5 3 11 I 3 2 11 5
I 1
J = 4 7 3 5
4
4 7 5 J 1 3 4
J 35
3
Mathsenligne.net NOMBRES EN ECRITURE FRACTIONNAIRE EXERCICE 2A
K = 5 3 5
7 2 7
K 50
147
L = 4 3 3
20 11 7
4 3 11 L 3 4 5 7
L 11
35
M = 11
14 7 11 3
11 7 11 M 7 2 1 3
M 121
6
N = 8 7 1
5 11 4
2 4 1 11 N 7 5 4
N 22
35
O = 2 3 4
5 6 7 8
9 0 11