Look at the clues below and fill all the numbers you can into the grid. Then start again and use your answers to help solve the other clues.
ACROSS DOWN
2. 7 down minus 482 1. Four times eight
4. Number of weeks in a year 2. 12 across minus 16 across
5. Number of days in four weeks 3. 1640 doubled
7. Seven times nine 4. 6 down minus 5 across
8. 8617 re-arranged 6. Nine times nine
10. 15 down plus forty-two 7. Five times 121
12. Quarter of 100 9. Half of 1450
13. Half of 10486 11. 716 doubled
15. Half of 10 across 14. A third of sixty-three
16. Quarter of 4 across 15. Number of hours in two days
17. Four times twenty-two 17. Half of 164
18. 82+62+78 19. 100 divided by five