1st grade
23+10
33
100+137
237
4x4
16
10x12
120
4.56+1
5.56
30+27
57
137+137
274
5x6
30
20x20
400
5.67+3.03
8.70
40+16
56
160+120
280
6x7
42
420/6
70
8.70+4.50
13.20
50+12
62
200+200
400
7x7
49
4000/50
80
12.67+2.03
14.70
67+44
111
237+137
374
9x9
81
400000/500
800
20.79+12.01
32.80