Vocabulary Homework 1

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Across
  1. 3. the answer to an addition
  2. 4. a letter that represents an unknown number
  3. 5. operations operations that undo each other
  4. 6. a math sentence with operations, no equal sign
  5. 8. an expression with an equal sign
Down
  1. 1. the answer to a subtraction problem
  2. 2. the answer to a division problem
  3. 7. the answer to a multiplication problem