1+1
2
20-20
0
62
36
2+2
4
5-(-3)
8
33
27
3+3
6
-600-(-200)
-400
122
144
1,000+3
1,003
3-4
-1
55
3,125
500+1,000
1,500
-20-(-4)
-16
47
16,384