+5
10
15
10
20
13+2=?
15
Lisa has 2 marbles and Felicia has 3 marbles what is the difference between Felicia's and Lisa’s marbles?
1
23
28
14
24
23+4=?
10-3=?
7
56
71
23
33
30+8=?
38
15-7=?
8
54
59
40
50
35+5?
40
20-14=?
6
110
115
79
89
95+15=?
110!
35-15=?
20