Add & Subtract Within 20
10 + 10 =
20
18 + 50 =
68
22 + 4 =
26
16 + 60 =
76 - 60 =
76
16
13 + 4 =
17
60 + 23
83
45 + 13 =
58
61 + 30 =
91 - 30 =
91
61
17 - 7 =
10
91 + 5 =
96
32 + 50 =
82
64 + 20 =
84 - 20 =
84
64
13 - 2 =
11
22 + 6 =
28
12 + 3 =
15
36 + 10 =
46 - 36 =
46
10