Maths

12345678910
Across
  1. 2. 5432+1234
  2. 6. 542-37
  3. 7. 5555x5555
  4. 8. 7412x31
  5. 9. 9876x1234
Down
  1. 1. 6789x1119
  2. 3. 9876x6879
  3. 4. 1234x1234
  4. 5. 5643-1111
  5. 10. 10x19+8-7