Maths

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Across
  1. 2. square root of 400
  2. 4. ___ down: Last thing to do in long division
  3. 5. 3!
  4. 6. cube root of 1728
  5. 7. 100/(10*10)
  6. 8. What does this symbol mean?-/
  7. 9. The cube root of 729
Down
  1. 1. 560/80
  2. 3. 10 squared+
  3. 4. The written method of division
  4. 6. 56+78-124