2桁の足し算と引き算
.
67 + 68 = 23 + 97 =
71 - 27 = 10 - 9 =
24 + 80 = 19 - 9 =
44 - 14 = 77 - 61 =
13 + 38 = 98 + 68 =
17 - 17 = 79 - 65 =
27 - 15 = 16 + 73 =
10 + 87 = 73 + 29 =
53 - 14 = 79 + 30 =
30 + 99 = 98 - 41 =
60 + 14 = 23 - 16 =
89 + 98 = 44 - 22 =
65 - 19 = 90 + 73 =
84 - 43 = 47 + 32 =
37 + 45 = 71 - 13 =
37 - 28 = 84 - 60 =
97 - 44 = 23 + 31 =
33 - 31 = 45 + 77 =
27 + 98 = 70 + 24 =
57 + 97 = 71 + 57 =
75 - 75 = 44 - 27 =
52 + 30 = 71 - 36 =
30 + 25 = 16 + 94 =
13 + 80 = 24 + 38 =
60 + 51 = 54 + 62 =
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