level.1
9-8=
1
10+9=
19
9-6=
3
5-9=
-4
20*6=
120
21+78=
99
32-20=
-12
10*2=
20
20+22=
42
52-6
46
200+100=
300
200*4=
800
300/6=
50
11*5=
55
99-80=
-19
78*23=
1794
43*12
516
23/23=
1
50+21=
71
5-(9*6)+3=
-46
120-50=
70
56*90=
5040
280*7
1960
5-9+(6*12)=
68
9-5+(9*13)+9=
130