2桁の足し算と引き算
.
19 - 8 = 13 + 21 =
53 + 43 = 54 + 84 =
65 - 23 = 74 - 32 =
55 - 37 = 26 - 9 =
86 + 72 = 42 + 35 =
99 + 97 = 32 - 16 =
79 + 86 = 18 - 8 =
24 - 7 = 45 - 28 =
65 - 43 = 18 - 8 =
83 + 65 = 12 + 49 =
50 - 26 = 23 + 91 =
72 - 27 = 64 + 79 =
77 - 23 = 61 + 30 =
50 + 89 = 56 - 55 =
84 - 83 = 42 + 28 =
79 + 62 = 78 - 45 =
93 + 61 = 97 - 51 =
10 + 60 = 92 + 55 =
59 - 44 = 9 - 9 =
84 - 68 = 46 - 35 =
85 + 21 = 44 + 78 =
12 - 7 = 16 - 14 =
62 - 26 = 25 + 46 =
80 - 7 = 45 - 12 =
14 - 11 = 51 + 78 =
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