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一、直接写出得数(共30分)
11-2 = 13-5 = 24-8 = 41-6 =
4 + 55 = 29 + 4 = 8 + 18 = 76 + 6 =
43-9 = 56-7 = 12-3 = 17-8 =
5 + 87 = 88-3 = 40 + 21 = 18-7 =
82-6 = 21-4 = 33-7 = 54-5 =
30 + 70 = 90-60 = 74-70 = 53-3=
25 + 5-8 = 9 + 3-6 = 18-3-9 =
10 + 5-7 = 32-4-8 = 11-6 + 9 =
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