Sumas
50+20+30
100
40-20
20
60+20-40
40
200+300+100
600
600-300
300
45+5+10
60
48-24
24
28+2-30
0
500+100+200
800
700-400-250
50
23+7+5
35
69-14
55
46+10-6
50
120+100+900+1,000
2,120
150-10
140
55+20+15
90
43-20
23
87+10-6
91
3,234+3,020
6,254
642-200
442
13+15+20
48
89-32
57
25+23-14
34
248+131+1
380
777-436
341