2桁の足し算と引き算
.
80 - 32 = 69 - 39 =
76 - 24 = 12 - 11 =
25 + 73 = 62 + 89 =
13 + 70 = 99 + 25 =
98 - 67 = 30 - 23 =
18 - 14 = 51 + 60 =
33 + 54 = 17 - 15 =
49 + 60 = 21 - 18 =
21 - 9 = 13 + 41 =
64 - 44 = 99 - 73 =
27 + 16 = 35 - 7 =
78 + 9 = 83 + 69 =
50 + 45 = 12 - 10 =
55 + 38 = 24 + 59 =
93 - 15 = 69 + 43 =
50 - 26 = 69 + 53 =
51 + 83 = 17 + 12 =
76 + 56 = 12 - 9 =
30 + 29 = 82 - 67 =
41 - 13 = 47 - 23 =
69 + 10 = 53 - 8 =
59 + 99 = 86 + 74 =
85 - 73 = 61 - 17 =
84 - 72 = 57 + 59 =
63 + 72 = 51 + 65 =
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