Maths crossword

12345678
Across
  1. 1. 9X(3+3)
  2. 4. 49.08/0.012
  3. 5. 90348+2610
  4. 8. (-49)/[(-4)+(-3)]
Down
  1. 1. 4687+1003
  2. 2. 84863-2048
  3. 3. 6X7-4X8
  4. 4. 4118+531
  5. 6. (3+6)X(8-5)
  6. 7. square root of 3136