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20 questions
-4 + -13 = ?
9
17
-9
-17
3 + 2 = ?
5
1
6
-1
-6 + 14
-15 + 24
28 + ( -14 )
16 + ( -14 )
-29 + 30
27 + ( -19 )
-25 + ( 3 )
-21 + ( 30 )
-7 + ( -6 )
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