a) | Remplace les pointillés par le naturel qui convient. |
64
. 62 |
=
64 + 2 = 66 |
(4
. 3)3
|
=
43 . 33 |
(53)5
|
= 515
|
34
. 35
|
=
39 |
22
. 24 |
= 22
+ 4
|
(3
. 8)2 |
=
32 .
82 |
(43)2
|
= 43
. 2 |
74
. 71 |
=
75 = 74 + 1 |
53
. 43 |
=
(5 . 4)3 |