666+475
1141
88- 90
-2
699 times 567
396333
888+109
997
100- 90
10
900 times 900
810000
900+900
1800
900-309
591
9 times 9
81
555+555
1110
394-598
-204
99 times 23
2277
954+954
1908
1000-90
910
456 times 456
207936