Sur une face, |
||
| Il y a cases. | Il y a
caisses. |
il y a cubes. |
| 4 x 5 = |
x
=
|
x
=
|
| Il y a jetons. | Il y a
bouteilles. |
En tout, il y a
cubes. |
| (4 x 5 ) x = | (4 x 3 ) x
=
|
x (
x
) =
|
| 4 x 5 x 3 = | 4 x
x
=
|
x
x
=
|
| 3 x x = |
x
x
=
|
x
x
=
|
| (5 x 2 ) x 6 = | 10 x 3 x 2 = | = (7 x 4 ) x 5 |
| 4 x ( 3 x 7) = | 1 x 9 x 12 = | 280 = (4 x 7 ) x |
| (8 x 6) x 2 = | 2 x 8 x 6 = | 130 = 2 x x 5 |
 |
Avec 30 cartes, on a | (4 x ) + = 30 |
| formé un rectangle de | 30 - 2 = 4 x | |
| 4 rangées de cartes | (30 - 2) : 4 = | |
| et il reste cartes. | (30 - 2) : = 4 | |
 |
Avec 52 cartes, on a | ( x ) + = |
| formé un rectangle de | - = x | |
| rangées de | ( - ) : = | |
| cartes et il reste | ( - ) : = | |
| cartes. |
| (5 x 9) + 4 = | (7 x ) + 2 = 58 | (8 x 8) + = 64 |
| - 4 = 5 x 9 | (9 x 9) + = 87 | ( - 1) : 7 = 9 |
| ( - 4) : 5 = 9 | 45 - = 6 x 7 | 5 = (33 - ) : 6 |
| ( - 4) : 9 = 5 | (94 - ) : 10 = 9 | = (17 x 10) + 5 |