#1
Students: Print this page - then write your name at the top. The numbers in the bottom row and in the right most column are the totals for the columns, rows and the left-to-right, top-to-bottom diagonal - they are shown in bold type. The block of numbers has some numbers missing - see the empty boxes. Fill in those numbers so that the totals for all rows, columns and the left-to-right, top-to-bottom diagonal match the totals shown.
| 7 | | 63 | 80 | 93 | 36 | 1 | 81 | 92 | 30 | 530 |
| 79 | 34 | | 45 | 73 | 1 | | 17 | 74 | 75 | 493 |
| 68 | | 8 | 80 | 83 | 70 | 84 | 5 | 10 | 78 | 556 |
| | 37 | 91 | 5 | 74 | 35 | 62 | 41 | 97 | 17 | 532 |
| 69 | 61 | 36 | 11 | 31 | 45 | 15 | 45 | 21 | 43 | 377 |
| 82 | 45 | 68 | | 75 | 35 | 38 | 82 | 96 | 23 | 567 |
| | | 70 | 13 | 56 | 41 | 42 | 40 | 69 | 38 | 514 |
| 38 | 7 | 18 | 57 | 6 | 7 | | 95 | 49 | 37 | 347 |
| 54 | 39 | 82 | 65 | 95 | 27 | 67 | 67 | 28 | 39 | 563 |
| 95 | 78 | 43 | 74 | 65 | 73 | 89 | 23 | 54 | 88 | 682 |
| 615 | 513 | 525 | 453 | 651 | 370 | 480 | 496 | 590 | 468 | 373 |