Combing Like Terms

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Across
  1. 3. number a number without fractions
  2. 6. A letter or symbol that stands for an unknown number
  3. 7. To put an expression in its simplest form by combining like terms
  4. 8. Contain only numbers and operations and does not have an equal sign
  5. 9. Parts of an algebraic expression of equation that are separated by operations.
Down
  1. 1. Contains variables, operations and numbers and does not have an equal sign.
  2. 2. A number that never changes
  3. 4. any number that can be placed on a number line or expressed as in infinite decimal
  4. 5. The number in front of the variable