1st Grade
2+4
6
11+22
33
1x11
11
12x12
144
2+{3+5}x5
42
7+8
15
12+2
14
6x3
18
1/4 + 1/4
2/4 = 1/2
3/4 + 4/4
1 3/4
3+2
5
5+3
8
12x3
36
12x13
156
9+{2+5}x2
96
4+5
9
2+32
34
6x2
12
7x12
84
9/10+2/10
1 1/10
1+2
3
45+7
52
5x6
30
6x13
78
87/100 + 14/100
101/100 = 1 1/100