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10 questions
10 + 10 =
10
20
30
40
10 + 100 =
100
110
120
130
15 - 5 =
5
15
40 + 30 =
60
70
80
90
7 + 9=
14
16
18
40 + 40 =
200 + 200 =
200
300
400
50 + 20 =
50 - 30 =
100 + 40 =
140
150
160
170
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