Suma
38 + 52=
90
53-12=
41
12x5=
60
10-20-30-_?_-50
40
(4x3) + 6=
18
44+66=
110
100-37
63
10x3
30
66 - 77 - 88 - 99 - _?_
110
(14+22) X 2 =
72
104 + 208 =
312
306 - 186 =
120
18x2
12 - 24 - _?_ - 96
48
900 - 460 + 61
501
730 + 470 =
1200
1000 - 654 =
346
19x5
95
12 - 15 - _?_ - 21 - 24
18
(400 x 2) - 300 =
500
523 + 457 =
980
456 - 123 =
333
120 x 6 =
720
456 - 567 - 678 - _?_
789
(42 x 3) + 34 =
160