67x7
469
789+678
1,467
56-29
27
34x5
170
890+678
1,568
79-25
54
78x8
624
567+890
1,457
890-231
659
90x3
270
400+700
1,100
825-630
195
456x5
2,280
9,876+2,567
12,443
1,000-99
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