Scroll down to find the right answer to the problem. Click HERE for a pop-up drag and drop number board for students to use when regrouping

18 + 21
33 + 13
42 + 23
53 + 23
34 + 11
55 + 32
26 + 13
54 + 23
43 + 44
63 + 32
25 + 54
38 + 41
45 + 21
61 + 24
24 + 22
53 + 42
73 + 15
32 + 37
40 + 23
32 + 22
43 + 54
31 + 42
35 + 42
36 + 42
24 + 25
48 + 41
33 + 51
62 + 33
36 + 32
42 + 43
37 + 52
71 + 28
53 + 45
44 + 34
22 + 52
64 + 33
21 + 17
56 + 31
47 + 52
36 + 43