1
- 4 + 3 =
-1
-7
+1
+7
2
- 8 - 10 =
-18
-2
+18
+2
3
(-12) - (-4) =
-8
+8
-16
+16
4
(+432) ⋅ (−7) =
−3024
+3024
+2824
-2824
5
8 ÷ (−2) =
-4
+4
+10
10
6
(−5270) ÷ (−5) =
-154
+154
-1054
+1054
7
0 ÷ (−2) =
0
-2
+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
