additions
4 plus 4
8
4 mines 3
1
3/4 plus 2/4
5/4
99/99 mines 1/1
98/98
6 times 6
36
12 plus 12
24
34 mines 2
32
200/200 plus 100/100
300/300
2/2 mines 1/1
1/1
12 times 12
124
99 plus 1
100
33 mines 7
25
800/800 plus 100/100
900/900
3/3 mines 1/1
2/2
3 times 10
30
100 plus 900
1,000
12 mines 4
8
7 /7 plus 1/1
8/8
4/4 mines 1/1
3/3
7 times 3
21
45 plus 1
46
500 mines 200
300
9/9 plus 10/10
19 /19
7/7 mines 5/5
2/2
10 times 10
100