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10 questions
10 + 20 =
20
30
40
50
50 + 10 =
60
70
80
10 + 10 =
10
30 + 20 =
40 + 20 =
50 + 30 =
90
100
90 + 10 =
20 + 20 =
70 + 20 =
80 + 0 =
0
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