Pre-Algebra Math

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Across
  1. 2. 23*(x+2) when x is 1
  2. 4. (x+3)*8 when x is 7
  3. 5. (5+x)+1 when x is -8.
  4. 8. -(10^3)
  5. 12. 2*7+3^2
  6. 13. (x*4)/3 when x is 24
  7. 14. 10^3
  8. 17. 5*10
  9. 18. 3*2+1
  10. 19. 20*(-2)
Down
  1. 1. 8*9
  2. 3. 22 1/4*x+10 when x is 4.
  3. 5. (x*5)-3 when x is 8
  4. 6. -5*9
  5. 7. 1*(-1)
  6. 9. 2*5+1
  7. 10. 164876^2*0
  8. 11. (x*14)+2 when x is 2.
  9. 15. (-2*5)+2
  10. 16. (x+3)*3 when x is 2.