Activité 1 - Produit de deux nombres entiers (découverte de la règle)

c) Complète les tables de multiplication

6 . 5 =
30
 . .
6 . 3 =
18
 .  
6 . (– 4) =
– 24
 .  
6 . (– 2) =
– 12
 .  
.
  .            
5 . 5 =
25
 .
5 . 3 =
15
  
5 . (– 4) =
– 20
  
5 . (– 2) =
– 10
  
. . . . .
  .            
4 . 5 =
20
 .
4 . 3=
12
  
4 . (– 4) =
– 16
  
4 . (– 2) =
– 8
  
.
  ..            
3 . 5 =
15
 ..
3 . 3 =
9
  
3 . (– 4) =
– 12
  
3 . (– 2) =
– 6
  
.
  ..            
2 . 5 =
10
 .
2 . 3 =
6
  
2 . (– 4) =
– 8
  
2 . (– 2) =
– 4
  
.
  .            
1 . 5 =
5
 .
1 . 3 =
3
  
1 . (– 4) =
– 4
  
1 . (– 2) =
– 2
  
.
  .            
0 . 5 =
0
 .
0 . 3 =
0
  
0 . (– 4) =
0
  
0 . (– 2) =
0
  
.
  .            
(– 1) . 5 =
– 5
 .
(– 1) . 3 =
– 3
  
(– 1) . (– 4) =
+4
  
(– 1) . (– 2) =
+2
  
.
  .            
(– 2) . 5 =
– 10
 .
(– 2) . 3 =
– 6
  
(– 2) . (– 4) =
+8
  
(– 2) . (– 2) =
+4
  
.
  .            
(– 3) . 5 =
– 15
 .
(– 3) . 3 =
– 9
  
(– 3) . (– 4) =
+12
  
(– 3) . (– 2) =
+6
  
.
  .            
(– 4) . 5 =
– 20
 .
(– 4) . 3 =
– 12
  
(– 4) . (– 4) =
+16
  
(– 4) . (– 2) =
+8
  
.
  .            
(– 5) . 5 =
– 25
 .
(– 5) . 3 =
– 15
  
(– 5) . (– 4) =
+20
  
(– 5) . (– 2) =
+10
  
.
  .            
(– 6) . 5 =
– 30
 .
(– 6) . 3 =
– 18
  
(– 6) . (– 4) =
+24
(– 6) . (– 2) =
+12
  
  .      
    .