topic 3 vocab

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