Addition without Regrouping
10+10
12+19
31
20-9
11
31-19
12
3x4
12
24+23
47
29+36
65
36-6
30
57-48
8
5x5
25
37+31
68
45+36
81
47-25
22
64-29
35
6x8
48
42+46
88
56+82
138
56-33
23
71-16
55
7x7
49
66+23
89
92+18
110
96-45
51
120-52
68
11x9
99