12 + -5
7
7-3
4
5 x 5
25
.16 + .4
0.56
-50 + -7
-13 - 6
-19
11 x -2
-22
-4.3 + -2.7
-7
-17+4
-13
26 - (-9)
35
12/(-3)
-4
.9/.3
3
40+-27
13
8-2
8/0
undefined
10/11 + 1/11
1
-20 + 14
-6
1-7
-6 x -7
42
-2/8 + -1/4
-1/2
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