.
 

1.   (-6) - (-4) =

-10
10
-2
  2

Calculation rules.

2.   (-5) + 3 =

-8
8
-2
2

Calculation rules.

3.   (-9) ÷ (-3) =

-27
27
-3
  3

Calculation rules.

4.   12 - (-8) =

-20
20
-4
  4

Calculation rules.

5.   -15 - (5) =

-20
20
-10
10

Calculation rules.

6.   -8 ÷ 4 * 2 =

-4
4
-1
1

Calculation rules.

7.   (-1) * 27 ÷ 9 * (-3) =

-9
9
-1
1

Calculation rules.

8.   (-2) + (-7) =

-9
9
-5
5

Calculation rules.

9.   4 - 7 =

-11
11
-3
  3

Calculation rules.

10.   2 - 4 + 6 =

-2
0
4
Aucun de ceux-ci.

Calculation rules.