Property Fun

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Across
  1. 6. # with no varible
  2. 7. property of zero. Any # times zero is 0; 4*0=0
  3. 8. Something is = to itself ;2=2
Down
  1. 1. # in front of a letter
  2. 2. property for addition. (2+3)+5=2+(3+5)
  3. 3. property for addition. 2+3=3+2
  4. 4. If a=b & b=c ,then a=c
  5. 5. inverse. A #'s opposites ; 2+2=0
  6. 9. Terms. Same varibles;same exponent