1		2			3
4				5					6
			7
8								9
				10
	11

 Check 

2. 7 across X 10 across + 8 across 4. 8 across X 9 down 7. 8 across X 10 across 8. 1 + 1 10. 8 across + 6 down 11. 10 across X 3 down - 8 across

1. 8 across X 8 across 3. 10 across X 10 across 4. 3 down + 7 across 5. 8 across X 4 down 6. 8 across divided by 8 across 9. 8 across X 10 across + 6 down