d) | Calcul rapidement. |
– 9
– 13 =
|
–
22
|
12
– 13 =
|
–
1
|
– 10
+ 8 =
|
–
2
|
9
+ 13 =
|
22
|
– 20
– 10 =
|
–
30
|
– 8
+ 10 =
|
2
|
9
– 13 =
|
–
4
|
– 45
+ 33 =
|
–
12
|
– 8
– 10 =
|
–
18
|
– 13
– 9 =
|
–
22
|
– 47
– 23 =
|
–
70
|
– 10
– 8 =
|
–
18
|
– 13
+ 9 =
|
–
4
|
– 19
+ 23 =
|
4
|
8
– 10 =
|
–
2
|