Addition and Subtraction Vocabulary

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Across
  1. 2. the answer to an addition problem
  2. 3. a way to check to see if your answer is reasonable
  3. 4. how much a number is worth
  4. 6. a number close to the actual (real) number
  5. 7. a number in an addition problem
  6. 9. putting two numbers together
Down
  1. 1. finding the difference between two numbers
  2. 5. a way to make a number simpler
  3. 8. the answer to a subtraction problem