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