Josie's Extention

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Across
  1. 4. diagram a rectangular model
  2. 5. the numbers that are multiplied together to get a product
  3. 6. a mathematical phrase that contains numbers and/or letters and at least one operation
  4. 8. operation two operations that undo each other
  5. 9. the result of using smaller numbers to estimate a sum or product
Down
  1. 1. the answer to a multiplication problem
  2. 2. to give a close guess
  3. 3. numbers close in value to the original number but easier to estimate or calculate
  4. 6. a mathematical sentence that uses a equal sign to show that two operations have the same value
  5. 7. the result of using bigger numbers to estimate a sum or product