Bethany´s math crossword- easy

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Across
  1. 4. four squared
  2. 6. 20/2
  3. 7. 5*2 4*2+1
  4. 9. 5*2+4
  5. 11. (637*3)*0
Down
  1. 1. 3*4
  2. 2. 1-7+1
  3. 3. 4+5-2
  4. 4. 3*4-6
  5. 5. 4*2+1
  6. 8. 20/2
  7. 10. 3*1-1