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15 questions
90
87
-42
28
53
-36
61
-19
70
45
167
337
599
557
56
7/
-60
-14
89
27
92
-30
43
58
167
557
387
104
45
62
82
-56
42
233
167
347
538
555
444
333
222
111
Is a _____________________ sum
41
83
10
-59
72
169
147
193
Division:
168÷6
61
72
28
94
658÷7
255÷3
85
97
43
18
340÷5
23
68
22
34
148÷2
472÷8
59
69
79
67
324×6
293×3
6784
879
4555
2309
364×7
3335
2324
2548
2345
61
89
72
-43
90
58
65
82
-12
35
321
324
489
442
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