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