1
Resolva: 200b-100b×2-10
190
200
300
120
2
Resolva: 200-200+10-1×3+2
15
19
30
29
3
Resolva:2×300-200-1
399
400
100
498
4
Resolva:-2+10
8
9
12
10
5
Resolva:1,4-x=1,2
2,6
0,0
1,0
1,7
6
Resolva: 2\6÷3
20
Quebrado
21,1
22
