1
- 4 + 3 =
-1
+1
+7
-7
2
- 8 - 10 =
-2
+2
+18
-18
3
(-12) - (-4) =
+16
-16
+8
-8
4
(+432) ⋅ (−7) =
+2824
−3024
+3024
-2824
5
8 ÷ (−2) =
-4
+10
+4
10
6
(−5270) ÷ (−5) =
+1054
-1054
+154
-154
7
0 ÷ (−2) =
-2
0
+2
Impossível
8
(+𝟒) ⋅ (−𝟐) ⋅ (+𝟓) =
-40
+40
+3
-3
9
253 x 21 =
5303
5313
5300
5000
10
(+72) ÷ (−3) =
-24
+24
-69
+69
