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10 questions
580-432=
145
198
148
123
164
864-238=
626
547
619
719
981-764=
299
215
315
217
496-139=
280
357
436
389
189-64
165
478
125
234
483-429=
54
55
53
59
999-948=
84
87
80
51
126-54=72
567
52
72
85
917-99=
814
809
817
818
80x9
829
820
720
920
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