Chapter 2 Review

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Across
  1. 2. If a=b, then a-c=b-c
  2. 4. -(a-b)=-a+b
  3. 6. c(a+b)=ca+cb; c(a-b)=ca-cb
  4. 10. If a=b, then a+c=b+c
  5. 11. a (x) -1 = (-a)
  6. 12. Use numbers, tables, graphs, or algebra to see if 2 expressions are equivalent
  7. 13. If a=b, then ac=bc
  8. 15. If a (x) b = 0, then either a=0, b=0, or both a&b=0
  9. 18. a+(-a)=0
  10. 19. 1
  11. 20. a+0=a
  12. 22. If a+b=c, then b+a=c, c-a=b, and c-b=a
  13. 23. If a=b, then a/c=b/c
  14. 24. If ab=c, then ba=c, c/a=b, and c/b=a
  15. 25. a (x) 1 = a
  16. 26. the number that is a factor in a term
Down
  1. 1. write the GCF outside () and the remaining terms inside ()
  2. 3. 0
  3. 5. a diagram used to show 4 related number facts
  4. 7. two or more terms that contain the same variables raised to the same powers
  5. 8. a (x) 0 = 0
  6. 9. 3t+40t=43t; 8k^3+22k^3=30k^3
  7. 14. -(-a)=a
  8. 16. a (x) 1/a = 1
  9. 17. (a+b)/c=a/c+b/c
  10. 18. When two numbers add to 0; opposites
  11. 21. -(a+b)=-a-b