10+9=

14-13=

11+3=

8+11=

19+1=

16+4=

14-14=

20-2=

2+12=

2+13=

12+8=

1+16=

17+3=

18-1=

13-11=

4+10=

15-6=

13-3=

7+11=

2+12=

11-9=

19+1=

17-9=

0+12=

20-9=

10+1=

16-14=

11-11=

11+2=

16-8=

16-9=

15+0=

15-12=

16+3=

16+2=

11-6=

20-6=

7+12=

19-1=

14-5=

8+9=

14-9=

3+15=

17-6=

16+1=

12-5=

14-12=

10+10=

15+5=

16-1=