Math Integers

123456
Across
  1. 1. (-216)/(-2)
  2. 3. -66x-2
  3. 5. 5x9
Down
  1. 1. -6+18
  2. 2. (-2)x(-21)x(-2)
  3. 4. -72/2
  4. 6. (-162)/(-3)