Unit 3 Vocab

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Across
  1. 4. whole numbers and their opposites
  2. 7. a+(b+c)=(a+b)+c
Down
  1. 1. a+b=b+a
  2. 2. a number that can be written as a fraction
  3. 3. If a is multiplied by b+c,a can also be multiplied by b and a can be multiplied by c then the two products can be added
  4. 5. the distance from zero on a number line
  5. 6. a symbol that stands for an unknown value
  6. 8. two numbers that describe placement on the coordinate plane